Category

fba fees

Size-tier audits belong in your monthly FBA close
A small measurement drift can change fulfillment, storage, and placement economics. Audit size tiers monthly before fee leakage becomes normal.
Inbound placement fees should change how you build shipments
Placement fees are easiest to misunderstand at shipment creation. Model them alongside freight, receiving speed, and stockout risk before choosing an option.
Low-inventory-level fees need a days-of-supply model
The low-inventory-level fee is not just a replenishment problem. It is a SKU-level margin risk that needs daily days-of-supply tracking.
Why your true Amazon margin moves daily — and how to watch it
Most FBA tools tell you margin monthly. MarginLock surfaces every fee and reimbursement the day Amazon books it, so you see margin shifts in time to act.