Sea Freight China to US for Amazon FBA: Cost Breakdown

Start with the full ocean workflow, not only the booking rate

For China to US Amazon FBA freight, sea cost starts before the vessel and continues after arrival. Pickup, export handling, ocean linehaul, customs, terminal work, delivery, and any prep-side correction all belong in the same cost model if the seller wants a usable planning number.

Shipment size changes the cost logic

Some sellers say sea freight when the real decision is LCL versus FCL. The cost math behaves differently when the shipment is buying shared-cargo space by CBM versus filling enough cargo to justify a full container, so the size band should be identified before comparing options.

Destination handling is where weak quotes usually hide cost

Port handling, customs release, deconsolidation when applicable, domestic transfer, appointment coordination, and pallet work can erase the advantage of a cheap headline rate. A clean comparison asks what happens after the freight reaches the US, not only what happens on the water.

Convert the shipment plan into per-unit inbound cost

A sea-freight plan only becomes decision-ready when the total inbound spend is divided by sellable units. That per-unit number is what lets a seller compare sea against air replenishment, storage pressure, and the cost of holding more inventory for a longer lead time.

Use sea when lower cost still protects inventory timing

The right sea-freight plan is not the cheapest one on paper. It is the plan that reduces inbound cost while still protecting the date the inventory needs to be available for sale after customs, delivery, and Amazon receiving are complete.

What still needs human review

Live ocean costs change by lane, season, carrier capacity, port conditions, and receiving workflow.
Duty, tax, and Amazon seller fees are not fully modeled in this breakdown.