How many times would I have to use this to make it worth it?

The honest cost per use of something you want, at the rate you’d really use it.


When to use
When you catch yourself saying you’d use it all the time.
Time
2 min

The prompt

I’m considering . I tell myself I’d use it . The closest alternative is . Work out the cost per use over in three cases: my hopeful estimate, half of that, and a quarter of that. Show the three results in a small table next to the alternative, with the arithmetic so I can check it, and tell me the break-even point: how many uses before it beats the alternative. Then ask me one question about my past behavior that would tell us which of the three cases is most likely.

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