Detailed view
How this calculator works
The answer does not change between Quick and Detailed. This is the professional finance underneath it — the formula, assumptions and mechanics you can inspect when you want the extra detail.
Cost ceiling from price + margin + fees
Maximum absorbable cost = target price × (1 − target margin % − variable fee %) − fixed per-sale fees. The supplier-quote ceiling — beyond it, the deal fails the margin test.
Why fees clamp the ceiling
Variable fees (processor + marketplace) and fixed per-sale fees both eat the price-residual that survives the target margin. A higher fee shape dramatically lowers how much you can pay for the product.
