Free FBA Size-Tier Optimizer
FBA fees jump at size-tier boundaries — a fraction of an inch can cost thousands a year. Check your tier, your up-tier risk, and the exact packaging cuts that would drop a tier.
Packaged product
Current tier
large standard$5.52/unit fulfillment · billable 2.37 lb (dim. 2.37 lb)
longest side (16.5″) is within 10% of the 18″ limit — a packaging change could bump the tier.
Fit into small standard
$11,220.00/yrsaves $1.87/unit ($5.52 → $3.65) at 500 units/mo
- longest side 16.5″ → 15″
- shortest side 2″ → 0.75″
- weight 1.2 lb → 1 lb (16 oz)
FBA fees jump at tier boundaries, so millimeters matter: thinner inserts, vacuum packing or a box redesign can drop a whole tier. Fees are 2024-US approximations — confirm the current schedule in Seller Central before a packaging run.