The math behind every smart purchase

How long until this
pays for itself?

We calculate the exact breakeven point for everyday purchases — so you can stop wondering and start knowing.

5 wks Instant Pot · 1.8 mo Espresso machine · 4.5 mo Safety razor · 7 mo Bidet

Latest Payoff Analyses

Updated weekly

The Math is the Product

Every article follows the same formula: product cost, alternative cost, monthly burn rate, and one clear answer — the payoff date. No opinions. Just arithmetic.

01

We define the alternative

What does this product replace? Takeout? Store-bought razors? We find the ongoing cost of the status quo.

02

We run the numbers

Upfront cost ÷ monthly savings = breakeven. Then we stress-test it with different usage scenarios.

03

You get a single number

X months. That's your answer. Everything after that is pure savings — and we show you the chart to prove it.

Read our full methodology →