Cost per use divides the net ownership cost by the number of times you expect to use an item. Net ownership cost includes purchase price, setup costs, maintenance, and resale credit.
Resale value lowers the real cost of ownership. For expensive items, it can materially change the cost-per-use result and the break-even point against renting or paying per use.
Turn a sticker price into a lifetime ownership decision
Cost per use is useful when the visible price is not the real price. Model purchase cost, maintenance, expected use, resale value, and a rental or pay-per-use alternative. Pair the output with a budget review from Consumer.gov before committing cash.
"A purchase is expensive only if it stays unused, loses resale value, or beats no realistic alternative."
Use realistic frequency
Optimistic use counts make almost every purchase look cheaper than it is. Start with your normal week, not your ideal week.
Add hidden ownership costs
Accessories, storage, maintenance, consumables and repairs belong in the numerator.
Compare against renting
The FTC recommends checking full terms before buying; a rental or pay-per-use option may be cheaper for rare use.