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What does a unit actually leave you after Amazon takes its cut?
Price, cost, category and the size of the packed box. You get your size tier, both Amazon fees, your net profit per unit and the ACOS you break even at.
- Your FBA size tier and the limits it cleared, which is what sets the fulfilment fee
- Referral fee and fulfilment fee separated, so you can see which one is eating the margin
- Net profit per unit, net margin and the break-even ACOS that follows from it
Packed unit size and weight
Measure the packed unit as it ships, box included. Measuring the bare product is the most common reason a real FBA fee comes back higher than a seller expected.