
What's on this page
- The real question: cash flow versus ownership
- What buying actually costs
- What leasing actually costs
- The number that decides it: ROI and payback
- How payback moves with utilization
- The true cost of ownership
- Downtime: the cost nobody puts in the spreadsheet
- When buying wins
- When leasing wins
- New versus used equipment
- How to finance the purchase
- Watch for these red flags
- The third option: renting
- Common ROI mistakes on equipment
- A worked example: two businesses, one machine
- A decision checklist
- Building the true cost of ownership line by line
- The utilization test in practice
- Three equipment types, three different answers
- A quick pre-purchase scenario walk-through
- The bottom line
Buy or lease is one of the most consequential decisions a business makes about its equipment, and it is far too often made on gut feel or on whichever salesperson was more persuasive. The honest answer has almost nothing to do with preference. It is a calculation, driven by how hard you will actually use the equipment and how much cash you can afford to commit, and once you run the numbers the right choice is usually obvious.
This case study shows how to run that calculation: how to work out ROI and payback, how to count the true cost of ownership including the downtime nobody budgets for, and when buying beats leasing and when it does not. The goal is to replace a hunch with a number you can defend. You can model your own scenario in about a minute with our equipment ROI calculator.
Key takeaways
- Buy versus lease is a cash-flow and utilization decision, not a preference. Run the numbers before the salesperson runs them for you.
- Utilization is the single biggest factor. Owning wins when you run the equipment hard; leasing or renting wins when use is light or seasonal.
- ROI is the annual profit or savings the equipment adds divided by the full annual cost of owning it, not the purchase price alone.
- Downtime is the cost that flips decisions and never makes the spreadsheet. Where a stopped machine is expensive, reliability is worth paying for.
- The true cost of ownership includes financing, maintenance, insurance, downtime, training, and disposal. Count all of it, or you will underestimate the real number badly.
The real question: cash flow versus ownership
Strip away the sales pitches and the buy-versus-lease choice reduces to a single trade-off. Buying costs more cash up front but less over the long run, and it leaves you owning an asset with resale value. Leasing costs less up front and preserves your cash, but it costs more over the full term and leaves you owning nothing at the end. Neither is inherently smarter. Which one wins depends on your circumstances, and specifically on two things: how hard you will use the equipment, and how valuable your cash is right now.
A business flush with capital that will run a machine at full tilt for a decade should almost always buy, because it can afford the up-front cost and will extract the maximum value from ownership. A business short on cash, or one that needs equipment only for a season or a single contract, or one facing fast-moving technology that could make today’s machine obsolete, often does better to lease and keep its capital and its flexibility. The rest of this analysis is about turning those instincts into arithmetic, so you are not guessing.
What buying actually costs
Buying looks simple, one price, and it is anything but. The purchase price is the down payment on a stream of costs that continues for as long as you own the machine. To decide honestly, you have to count all of them.
There is the capital itself, whether paid in cash or financed with interest. There is depreciation, the value the equipment loses over time, which is real even though it never appears as a bill. There is maintenance and repair, rising as the machine ages. There is insurance, storage, and the operator training the equipment requires. And at the end there is disposal or resale, which can return some value or cost you to remove. Set against all of that is the single great advantage of buying: at the end you own the asset outright, and every hour you run it after the payback point is close to pure profit.
That last point is the heart of the case for buying. Leasing never stops costing money; owning does. Once a bought machine has paid for itself, it keeps working while the payments have ended, and that back half of its life is where owned equipment quietly outperforms every leased alternative, provided you used it hard enough to reach the payback point in the first place.
What leasing actually costs
Leasing reverses the shape of the cost. Instead of a large up-front sum and declining costs afterward, you pay a steady, predictable amount every month for the term of the lease. That predictability is leasing’s great strength: it protects cash, it is easy to budget, and it often bundles maintenance and service so you are not exposed to surprise repair bills.
The cost of that convenience is twofold. First, over the full term you almost always pay more than you would have to buy the same equipment outright, because the lease company takes its margin and its risk premium. Second, at the end of the lease you own nothing. You have paid for years of use and you hold no asset, so if you still need the equipment you start paying again, either renewing, re-leasing, or finally buying. Leasing is renting with a business label, and like renting a home it makes sense in the right circumstances and quietly drains money in the wrong ones.
The circumstances where it makes sense are specific and real: when cash is genuinely scarce and preserving it matters more than the long-run cost, when the equipment will be used lightly or briefly, when technology is moving fast enough that ownership risks leaving you with an obsolete asset, or when the bundled service and guaranteed uptime are worth the premium on their own. Outside those cases, leasing is usually the more expensive path.
The number that decides it: ROI and payback
Everything above becomes decidable once you calculate two numbers: return on investment and payback period. They are the tools that turn a debate into an answer.
Return on investment measures whether the equipment earns its keep. Take the additional annual profit the equipment produces, either new revenue it enables or costs it eliminates, and divide it by the full annual cost of owning and running it. A machine that adds $30,000 of yearly profit while costing $20,000 a year to own is returning strongly and clearly worth owning. One that adds $12,000 while costing $20,000 is destroying value and should not be bought at all, whatever the salesperson says.
Payback period measures how long until the equipment pays for itself. Divide the total purchase and setup cost by the annual profit or savings it generates, and you get the number of years to break even. A shorter payback is safer, because it leaves more of the equipment’s working life on the profitable side of the line. The discipline both numbers enforce is the same: count the full cost, use an honest estimate of the value produced, and let the arithmetic decide.
How payback moves with utilization
The reason utilization dominates the decision shows up clearly in the payback math. Because the cost of owning equipment is mostly fixed, the harder you run it, the faster it pays for itself, and the relationship is direct.
Months to pay back a machine, by how hard you run it
Same equipment, same cost, different utilization. Illustrative.
The same machine pays for itself in a bit over a year when run hard, or takes five years when used lightly. Utilization, not the purchase price, is what decides whether equipment is a bargain or a burden.
This single chart is the whole argument for the utilization test. The machine’s cost does not change across those rows; only how much you use it does. Run it hard and it pays for itself quickly, then earns for years. Use it lightly and it barely breaks even before it wears out. That is why, before buying anything, the first honest question is not “can I afford it” but “how much will I actually use it,” because the answer to the second question decides the answer to the first.
The true cost of ownership
The most common and most expensive mistake in equipment decisions is comparing the purchase price to the lease payment and stopping there. The purchase price is only one part of what owning costs, and leaving out the rest makes buying look cheaper than it is and leads to budgets that fall apart within a year.
Where the five-year cost of owning equipment goes
Approximate split for a typical piece of business equipment. Illustrative.
The purchase is under half the true cost over five years. Maintenance, downtime, and the rest make up the majority, which is exactly why a purchase-price comparison misleads.
Build the real number and the comparison between buying and leasing changes character. Sometimes the fuller accounting confirms that buying is cheaper, as it usually is for high-utilization equipment. Other times it reveals that a lease with bundled maintenance and guaranteed uptime is actually competitive once you price in the repair exposure and downtime risk you would carry as an owner. Either way, you are now comparing like with like, which is the only fair way to decide.
Downtime: the cost nobody puts in the spreadsheet
Of all the costs of ownership, downtime is the one most consistently ignored and the one most likely to change the answer. When a machine breaks, the repair bill is the visible cost, but it is rarely the largest one. The larger cost is everything that stops: the production you cannot deliver, the jobs you miss, the staff you still pay to stand idle, and sometimes the customers who go elsewhere when you cannot perform.
This is why reliability is worth paying for wherever downtime is expensive. It is the argument for buying newer equipment over older, for owning a backup where a single failure would halt operations, and for choosing lease arrangements that include fast service and a replacement machine when yours is out. An ROI calculation that leaves downtime out will always flatter the cheapest, least reliable option, because it counts that option’s low price while ignoring its high cost of failure. Price downtime in, and the true economics of reliable equipment become clear.
When buying wins
Buying is the right call in a recognizable set of conditions, and when they hold, it is usually not close.
- High, sustained utilization. You will run the equipment hard and regularly for years, so it reaches payback quickly and then earns.
- A long useful life. The equipment is durable and will not be made obsolete by new technology before you have extracted its value.
- Available capital. You can commit the up-front cost, or finance it affordably, without starving the rest of the business of cash.
- Predictable, ongoing need. The work that requires the equipment is a permanent part of what you do, not a one-off or a seasonal spike.
When these line up, ownership’s long-run cost advantage and the resale value of the asset make it the clear winner. You pay more today to pay much less over the life of the equipment, and you end up owning something worth selling.
When leasing wins
Leasing is the smarter path in an equally recognizable set of conditions, and forcing a purchase in these cases is how businesses tie up cash in assets they should have rented.
- Tight or precious cash. Preserving capital matters more right now than the long-run cost, so the predictable payment is worth the premium.
- Light or seasonal use. You need the equipment briefly, occasionally, or for a single contract, so ownership’s fixed costs would sit idle much of the time.
- Fast-moving technology. The equipment risks obsolescence, and you would rather return it and upgrade than be stuck owning a machine the market has moved past.
- Valued uptime and service. The bundled maintenance and guaranteed replacement are worth paying for because downtime would hurt more than the lease premium.
In these situations leasing is not the expensive mistake it is sometimes painted as; it is the disciplined choice that keeps capital free and risk contained. The error is not leasing itself but leasing equipment you should have bought, or buying equipment you should have leased.
New versus used equipment
Once you have decided to buy, the new-versus-used question is the next lever on ROI, and it can be a powerful one. Used equipment cuts the purchase price and sidesteps the steepest part of depreciation, which happens early in a machine’s life. For simple, durable equipment that you can inspect thoroughly, buying used can dramatically improve the return, because you get most of the working life at a fraction of the price.
The risks are the ones you would expect: an unknown history, less remaining life, and higher odds of repairs and the downtime that comes with them. That makes used a strong choice for rugged, mechanically simple equipment where condition is easy to assess and failure is not catastrophic, and a weaker choice where reliability is critical or the machinery is complex enough to hide expensive problems. New equipment costs more but brings a warranty, a full life ahead of it, and the predictable reliability that matters most where downtime is costly. The right answer depends on the same factors as everything else in this case study: utilization, the cost of failure, and how much cash you want to commit.
How to finance the purchase
If you buy, how you pay shapes the return almost as much as what you pay. Cash is the cheapest over the life of the equipment because it carries no interest, but it consumes capital you might need elsewhere, so it suits businesses with a comfortable cushion. A term loan spreads the cost and preserves cash while adding interest, which is the standard middle path for equipment that will earn enough to cover the payments. A line of credit offers flexibility for equipment needs that vary, at the cost of a variable rate.
The principle that ties these together is simple: match the financing term to the equipment’s useful life and to the income it produces. Financing a machine over a period shorter than the time it takes to earn its keep strains cash flow, while stretching payments far beyond the equipment’s productive life means paying for something after it has stopped earning. The best structure is the one where the equipment’s own output comfortably covers its payments across a term that fits its working life, so the asset effectively pays for itself as it goes.
Watch for these red flags
A few warning signs reliably separate a sound equipment decision from a costly one. Treat them as reasons to slow down and recalculate.
- A payback period close to the equipment’s useful life. If it barely pays for itself before it wears out, there is no margin for error and little profit to show for the risk.
- A utilization estimate that assumes best case. Deals justified by running the equipment flat out rarely survive contact with real, uneven demand. Test the numbers at realistic use, not peak.
- A comparison that ignores downtime and maintenance. Any pitch that puts purchase price against lease payment and stops there is hiding the majority of the real cost.
- Pressure to decide before you have run the numbers. Urgency is a sales tactic. The equipment will still be available after you have done the arithmetic, and if it will not be, that is the seller’s problem, not a reason to skip diligence.
None of these means walk away automatically, but each one means stop and verify. The decisions that go wrong are almost always the ones made fast, on the sticker price, with an optimistic guess about how much the equipment would be used.
The third option: renting
Buy and lease are not the only choices, and forgetting the third one, short-term rental, leads businesses to over-commit to equipment they need only occasionally. Renting is leasing compressed to its extreme: you pay the highest rate per day, but only for the exact days you use the machine, and you carry none of the ownership burden. For equipment needed a handful of times a year, renting is almost always cheaper than owning a machine that would sit idle the rest of the time.
The way to think about the three options is as a spectrum of commitment matched to a spectrum of use. Buying suits equipment used constantly, where the low long-run cost rewards heavy use. Leasing suits equipment used regularly but where cash or obsolescence argues against owning. Renting suits equipment used rarely, where paying a premium for the few days you need it beats owning something idle. Many businesses run all three at once, owning their core high-use machines, leasing the regularly-used ones, and renting the specialists they touch a few times a year.
The mistake is treating every equipment need as a buy-or-lease decision when the honest utilization number points to rental. If a machine would sit unused most of the year, the question is not whether to buy or lease it, but whether to own it at all rather than rent it when the need arises. Running the utilization test first is what surfaces that answer before you sign for capacity you will not use.
Common ROI mistakes on equipment
Even businesses that run the numbers often run them wrong, and a handful of mistakes account for most of the errors. Knowing them protects the calculation.
The first is optimistic utilization. Deals get justified on the assumption that the equipment will run flat out, but real demand is uneven, and a machine sized for the peak sits idle through the troughs. Always test the ROI at realistic average use, not the best week you can imagine. The second is ignoring the cost of capital. Cash spent on equipment is cash unavailable for everything else, and a purchase that looks fine in isolation can starve a more profitable use of the same money. The third is counting revenue instead of profit. Equipment that generates a lot of revenue at thin margins may add little actual profit, and ROI must be built on the profit it adds, not the top line it touches.
The fourth and most common is stopping at the purchase price. Every one of these mistakes traces back to comparing sticker prices while ignoring maintenance, downtime, financing, and disposal. The equipment with the lowest price tag is frequently not the one with the lowest cost of ownership, and the gap between the two is exactly where these ROI calculations go wrong. Count the full cost, use honest utilization, measure profit not revenue, and price in the capital, and the calculation becomes reliable.
A worked example: two businesses, one machine
Numbers make the principle concrete, so consider the same $50,000 machine bought by two different businesses. The first runs it hard, close to continuously, and the machine adds a substantial, steady stream of profit. Its payback arrives in a bit over a year, and for the rest of the machine’s working life it produces profit against payments that have long since ended. For this business, buying is obviously right, and leasing would have meant paying a premium forever for equipment it uses enough to own outright many times over.
The second business needs the same machine only occasionally, for seasonal spikes and the odd contract. Run the same math and the picture inverts. The machine sits idle most of the year, so its fixed costs of ownership pile up against a thin trickle of value, and the payback stretches out toward the end of its useful life, leaving almost no profit for the risk. For this business, buying would tie up $50,000 in an asset that rarely earns. Leasing, or better yet renting the machine for the specific weeks it is needed, keeps the capital free and matches the cost to the actual use.
Same machine, same price, opposite decisions, and the only variable that changed was utilization. This is the lesson underneath every section of this article: the equipment does not determine whether buying or leasing is right. How you use it does, and the arithmetic simply makes that visible before you commit. The same discipline scales from a single machine to an entire fleet, which is why the businesses that run the numbers on every acquisition end up with equipment that consistently earns rather than a yard full of assets that looked justified at the time.
A decision checklist
Before you sign to buy or lease anything, run the choice past these checks.
- Estimate realistic utilization first, because it decides everything else, and test the numbers at honest use rather than best case.
- Calculate ROI and payback on the full cost of ownership, not the purchase price, including maintenance, downtime, and disposal.
- Compare buying and leasing like with like, pricing the maintenance and downtime risk you carry as an owner against the premium and service a lease includes.
- Match any financing to the equipment’s working life and to the income it produces.
- Confirm the accounting and tax treatment with your accountant, since the details vary and genuinely affect the comparison.
Put your figures into our equipment ROI calculator to turn the decision into a number you can stand behind.
Building the true cost of ownership line by line
The true cost of ownership is easy to talk about and easy to get wrong, so it helps to build one from scratch on an illustrative machine. Start with a $40,000 purchase. Financed over five years at an illustrative rate, interest might add somewhere around $9,000, so the financed cost of capital alone lifts the number to roughly $49,000 before the machine has run an hour. That is the figure many buyers stop at, and it is already well above the sticker they compared to a lease payment.
Now add the operating lines. Maintenance and repairs on a machine worked hard commonly run a few percent of the purchase price a year and climb as it ages, so across five years budget several thousand dollars, more for complex equipment. Insurance, storage, and the power or fuel to run it add a steady annual line. Operator training is a real cost the first year and again whenever staff turn over. Downtime, the line covered above, belongs here too as an expected annual allowance rather than a surprise. Set against all of that is the salvage or resale value at the end, which returns some cash and is the one line that moves in your favor.
Add the costs, subtract the salvage, and the honest five-year number on that $40,000 machine can land closer to $60,000 than to its sticker. The exact figure varies by market and supplier, so treat it as a shape to fill in with your own quotes rather than a fixed number. What does not vary is the gap between the full number and the purchase price. A lease payment compared against the sticker looks expensive; compared against the full ownership number it often looks competitive, and sometimes it wins. Build the whole column before you compare, because a fair comparison is the only one worth making.
The utilization test in practice
Utilization decides the buy-versus-lease answer, yet most businesses estimate it with a hopeful guess rather than a method. The practical test takes three numbers you can find in an afternoon. First, the hours or units the equipment would run in a realistic average week, not a peak week, counted honestly from how the work actually arrives. Second, the capacity the machine can deliver in that same week. Third, the ratio between them, which is your utilization rate.
A machine you would run near its capacity most weeks is a strong buy candidate, because its fixed ownership costs are spread across heavy use and its payback arrives quickly. A machine that would sit at a fraction of capacity is telling you something the salesperson will not: that ownership would pile fixed costs against thin use, and that leasing or renting almost certainly fits better. The number that most often surprises owners is how low real utilization runs once uneven demand, holidays, breakdowns, and slow seasons are counted, rather than the flat-out weeks they pictured when they first wanted the machine.
Run the test at honest average use and then stress it. Ask what the ratio looks like in a slow quarter, and what it looks like if a big contract you are counting on does not renew. Equipment that only justifies ownership under best-case utilization is equipment you should probably lease or rent, because the downside of guessing wrong on a purchase is a bought asset sitting idle, while the downside of guessing wrong on a lease is a payment you can eventually walk away from. The test is not complicated, but it has to be run on realistic numbers, because it is the single input that drives every other figure in the decision.
Three equipment types, three different answers
The buy-versus-lease framework gives different answers for different kinds of equipment, and three common cases show why the rule is never one size fits all. Take a delivery vehicle a business would run every working day for years. Utilization is high, the useful life is long, and the resale market is deep, which is close to a textbook buy: ownership’s lower long-run cost and the recoverable resale value both reward the heavy, sustained use.
Now take a specialized machine tied to fast-moving technology, the kind that a newer model could make uncompetitive within a few years. Even at high utilization, the obsolescence risk changes the math, because owning it means carrying the risk that the asset loses its value before it has earned out. Leasing shifts that risk to the lessor and keeps the option to upgrade open, which is often worth the premium when the technology is genuinely moving. Ownership can still win if the payback is fast enough to beat the obsolescence clock, but the clock has to be in the calculation.
The third case is seasonal or occasional equipment, needed hard for a few weeks and idle the rest of the year. Here neither buying nor a long lease fits well, because both commit you to fixed costs across months of idleness. Renting for the specific weeks of need is usually cheapest, and the utilization test makes that obvious the moment you divide the weeks used by the weeks in a year. The same framework, applied honestly to each type, points in three different directions, which is exactly why the answer has to come from the numbers on your equipment and not from a general preference for owning or leasing.
A quick pre-purchase scenario walk-through
Before committing, it helps to walk one scenario end to end the way a careful operator would. Imagine you are weighing a $25,000 machine that would let you bring a job in-house instead of subcontracting it. First, estimate the annual savings or new profit honestly: say the work you currently pay out costs you $18,000 a year, and doing it yourself would cost $6,000 a year in materials and labor, leaving $12,000 of annual benefit. That is the value line.
Next, build the cost line the way this case study has insisted throughout. The $25,000 purchase, financed, carries interest; add maintenance, a share of downtime, insurance, and training, and call the honest annual cost of ownership something like $7,000 across the first years. Set the $12,000 benefit against the $7,000 cost and the machine clears its keep with room to spare, and the payback on the purchase price arrives comfortably inside its useful life. On those numbers, buying looks sound.
Then stress it. What if the in-house work turns out to be half what you projected, because the volume was optimistic? The benefit falls to $6,000, the cost of ownership stays near $7,000, and the machine now loses money every year it runs. That single sensitivity check, run before signing rather than after, is what separates a defensible purchase from a hopeful one. If the deal only works at your best-case volume, treat that as a signal to lease, rent, or keep subcontracting until the real demand proves itself. The arithmetic is simple; the discipline of running it honestly, and stress-testing it, is the whole game.
The bottom line
Buy or lease is not a matter of taste, and it is not the salesperson’s call. It is a calculation built on two questions: how hard will you use the equipment, and how valuable is your cash right now. Run the ROI and payback on the full cost of ownership, price in the downtime and maintenance that spreadsheets forget, and the right answer usually announces itself. Buy when utilization is high and the asset earns for years; lease when cash is tight, use is light, or uptime is worth the premium; rent when the need is rare enough that owning at all makes no sense.
The businesses that get equipment decisions right are not the ones with the deepest pockets or the best negotiators. They are the ones that insist on a number before they commit, that measure utilization honestly, and that count the whole cost rather than the sticker. That discipline is available to any business willing to spend an hour on the arithmetic, and over the life of a fleet it is the difference between equipment that quietly compounds profit and equipment that quietly drains it. Decide on the numbers, not the pitch, and every machine you own or lease becomes a deliberate bet you can defend rather than a hope you signed up for.
Numbers first, signatures second. This case study is educational, written operator to operator, and it is not financial, tax, or business advice. Every figure is an illustrative planning range, not a quote, and real costs, rates, and resale values shift with the equipment, the industry, and how hard you run the machine. Do your own arithmetic on your own operation, then confirm current pricing, financing terms, and the tax and accounting treatment with your accountant before you sign for anything.
Frequently asked questions
Is it better to buy or lease business equipment?
It depends on how hard you will use the equipment and how tight your cash is. Buy when utilization is high and the equipment holds up for years, because ownership is cheaper over the long run and you keep the asset. Lease when cash is tight, the equipment risks becoming obsolete, or you need it only for a season or a specific job. The decision is a cash-flow and utilization calculation, not a matter of preference.
How do I calculate the ROI of equipment?
Take the additional profit the equipment generates in a year, from new revenue or from costs it removes, and divide it by the total cost of owning it for that year. If a machine adds $30,000 of annual profit and costs $20,000 a year to own and run, the return is strong. The key is to count the full cost of ownership, not just the purchase price, and to use a realistic estimate of the profit it actually adds.
What is a good payback period for equipment?
A shorter payback is safer, and what counts as good depends on the equipment's useful life. As a rule of thumb, a payback well inside the equipment's working lifespan leaves room to profit after it pays for itself, while a payback that stretches close to the end of its life is risky. Payback is the purchase and setup cost divided by the annual profit or savings the equipment produces, so higher utilization shortens it directly.
Why does utilization matter so much?
Because the cost of owning equipment is largely fixed whether you use it or not, while the value it produces depends entirely on how much you run it. A machine used at full capacity pays itself off quickly and then generates profit. The same machine sitting idle half the time still costs nearly the same to own but produces half the value, which is how an expensive asset becomes a money pit. Utilization is the single biggest factor in the buy-versus-lease decision.
What costs do people forget when buying equipment?
The purchase price is only the start. The true cost of ownership adds financing interest, maintenance and repairs, insurance, the cost of downtime when it breaks, operator training, and eventual disposal or resale. Downtime in particular is almost never in the spreadsheet, yet lost production while a machine is out of service can dwarf the repair bill itself. Counting only the sticker price is how buyers underestimate the real cost by a wide margin.
Is leased equipment an asset?
Generally no, not in the way owned equipment is, because you do not own it during the lease. Leasing keeps the equipment off your balance sheet as an owned asset and turns it into a predictable operating expense instead, which can help cash flow and preserve borrowing capacity. The accounting treatment depends on the type of lease and current rules, so confirm the specifics with your accountant, since this is one area where the details genuinely matter.
Should I buy new or used equipment?
Used equipment lowers the purchase price and slows depreciation, which can dramatically improve ROI if the machine is mechanically sound and well maintained. The risks are unknown history, shorter remaining life, and higher repair odds, so used makes most sense for simple, durable equipment you can inspect thoroughly. New equipment costs more but brings warranty, full life ahead of it, and predictable reliability, which matters most where downtime is expensive.
How does downtime affect the decision?
Downtime is the hidden cost that can flip a decision. Every hour a machine is out of service is lost production, missed jobs, and sometimes idle staff you still pay. Where downtime is expensive, it argues for newer, more reliable equipment, for owning a backup, or for leasing arrangements that include fast service and replacement. Any honest ROI calculation has to price downtime in, because ignoring it makes cheap, unreliable equipment look better than it is.