The delay cost of an impulse buy

Every purchase has two prices: the tag, and the cost of each time you actually use it. A thing used rarely is expensive per use, and the same money not spent would move a savings goal closer. Enter the price, how often you expect to use it in the first year, and your monthly saving; the tool shows the cost per use and how far the purchase pushes your goal back — no labels, just the trade-off.

Result

For something priced 4,800, used about 24 times in the first year, the cost per use is about 200; the less you use it, the more each use costs. Put that money back into savings and your goal (saving 1,200 a month) slips by about 4.0 months. You already own 1 similar item(s) — run a 72-hour check before deciding; the numbers only lay out the trade-off.

Cost per use: 200
Goal slips by: 4.0 months
Similar items owned: 1
Suggestion: Recheck after 72 hours

The cost per use follows the number of uses you expect; guess low if you are unsure.

Assumptions & limits

The result changes if the item can be rented or resold. The tool lays out the cost; it does not put a label on you.