Before you spend a cent, work out the two numbers that decide it: what a customer is worth to you, and the most you can pay to acquire one and still come out ahead.
Your test needs about 11 paying customers to break even.
Stop if spend reaches $125 with fewer than 3 paying customers, or if CAC stays above $24 after the full test budget.
The calculator runs client-side only. Nothing is saved or sent anywhere.
Enter your average order value, your product-plus-fees cost, and your target test budget, and this calculator returns your break-even CAC, a sensible test window, and the stop conditions to set up front.
That is the same math jujugrowth's Pro campaign briefs run on your real connected order data, every time, in your own currency. When the numbers do not support a campaign, the brief says so, with the figure that kills it, instead of pushing you to launch anyway.
Want it run on your actual store instead of typed-in guesses? Connect free in about five minutes, no card, and jujugrowth pulls your real customer value and break-even from your last 90 days.
Start free, no card