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Quick answer
What does the Price per use calculate?
Is a higher upfront price cheaper over its lifetime? This calculator uses option a price, expected uses a, option b price, expected uses b, and option b upkeep to estimate lifetime unit cost immediately in your browser.
With the values currently entered, the result is Option B — has the lower price per use. It also shows option a / use, option b / use, and difference / 100 uses.
How to use the Price per use
- Replace the example values with your own numbers.
- Review the result and supporting figures as they update automatically.
- Check the formula and assumptions before using the estimate for a decision.
Inputs used
- Option A price
- Expected uses A — entered in uses
- Option B price
- Expected uses B — entered in uses
- Option B upkeep
Price per use formula
Purchase price plus upkeep ÷ expected uses
Assumptions
- Expected uses reflect actual behavior.
- Resale value and time value of money are excluded.
Practical guide
Price per use example and edge cases
Is a higher upfront price cheaper over its lifetime? Let's use a concrete example, then look at the assumptions that can move the answer.
Example: A practical price per use scenario
For this example, use option a price of 90, expected uses a of 80 uses, option b price of 180, expected uses b of 300 uses, and option b upkeep of 25. These are starting values, so replace them with numbers that match your situation.
- Option A price
- 90
- Expected uses A
- 80 uses
- Option B price
- 180
- Expected uses B
- 300 uses
- Option B upkeep
- 25
Calculated resultOption Bhas the lower price per use
Start with has the lower price per use. Then check option a / use, option b / use, and difference / 100 uses to understand what sits behind the main result.
Example results use the default display profile. The calculator above follows your selected country and units.
How to read the result
- Read the main result first. The supporting figures for option a / use, option b / use, and difference / 100 uses explain how the estimate is built.
- The method is Purchase price plus upkeep ÷ expected uses. Keep the units consistent and use values from the same time period.
Edge cases worth checking
When option a price is unusual
Expected uses reflect actual behavior. Double-check this input before relying on the result.
When option b upkeep is uncertain
Resale value and time value of money are excluded. Run a lower and higher value to see a useful range.
What changes the result most
Option A price
Use a current amount for option a price. Include fees or recurring costs that belong in the same figure.
Expected uses A
Use the count you expect in real life. Round up when a partial uses cannot be purchased or used.
Option B price
Use a current amount for option b price. Include fees or recurring costs that belong in the same figure.
Try a different scenario
Small changes show whether the answer is stable or sensitive.
Option A price: 10% lower
81Option Bhas the lower price per use
Option A price: 10% higher
99Option Bhas the lower price per use
Expected uses A: 10% higher
88 usesOption Bhas the lower price per use
Common mistakes
Check option a price
Expected uses reflect actual behavior. Make sure this matches the number you enter.
Keep option b upkeep consistent
Resale value and time value of money are excluded. Use the same units and time period throughout the calculation.
Do not rely on one price per use scenario
Run a cautious case and an optimistic case. The range is often more useful than one exact-looking number.
Use this result well
Is a higher upfront price cheaper over its lifetime?
Check the receipt, package label, serving needs, and current local price before buying.