ROAS looks great in a report and terrible on a P&L. How to set up paid media around margin.
A 4× ROAS on a 20% margin product loses money once you add fulfilment and returns. Most ad accounts are optimised for the wrong number.
Feed the algorithm margin data
Pass profit — not revenue — as your conversion value. Segment campaigns by margin tier. Let bidding chase the products that actually make you money.
Revenue is vanity. Profit is sanity.

