Winning Product Profit Calculator
Whether a winner survives being scaled.
Profit per day
$279
$526 at 3× spend
Scaling still works: 3× the spend produces $247 more a day even after CPA rises 35%. The ceiling is where rising CPA meets your contribution — at $26.19 per order, that is a CPA of $26.19.
How the Winning Product Profit Calculator works
A product that works at £200 a day does not automatically work at £600. Cost per acquisition rises as you exhaust the cheapest audience, and the ceiling is where that rising cost meets your contribution per order — which is a number you can calculate in advance.
Not financial advice. Marketplace fees change, and they vary by country, plan and seller status. Every rate here is an editable default, not a quoted price — check the platform's current fee schedule before you price a product against it. This is not tax or business advice.
Frequently asked questions
Why does cost per acquisition rise when I scale?
Because ad platforms show your ad to the most likely buyers first. Spending more means reaching progressively less likely audiences, and each additional order costs more than the last.
How much does CPA typically rise?
Tripling spend commonly raises CPA 25% to 50%, though it varies enormously by product and audience size. Measure your own — it is the single most important number for scaling decisions.
Where is the ceiling?
Where CPA equals contribution per order. Beyond that every additional order loses money, so more spend makes the business smaller in profit terms even as revenue grows.
How do I raise the ceiling?
Raise average order value through bundles and upsells, or raise conversion. Both increase contribution per order, which pushes the CPA ceiling up and buys you more room to scale.