Why break-even ROAS matters more than ROAS
Two stores can both report a 2.5x ROAS. The one selling at an 80% margin is printing money; the one at 35% is losing it on every order. ROAS on its own cannot tell them apart. Break-even ROAS can, because it is built from the costs that ROAS ignores. Work it out before you launch, not after. It tells you which campaigns are worth scaling, what cost per purchase to bid, and whether a product can be advertised profitably at its current price at all.
