Container to Amazon FBA: Floor-Loaded FCL Through a Prep Center

By Bernardo Campelo, Forbes Business Council E-Commerce Leader, Amazon SPN Certified provider, Amazon SP-API authorized partner, and Founder of PrepVia.

A 40-foot container holds somewhere between 5,000 and 20,000 units of a typical Amazon product, and the day it lands is the single largest receiving event most sellers will ever run. It is also the day Amazon wants nothing to do with it. A fulfillment center receives freight by appointment, carton by carton, with every unit already labeled and prepped. A factory container is none of those things. Something has to sit between the port and the FC, and this guide is about that something.

Why a Factory Container Cannot Go Straight to Amazon

Amazon's inbound program is built for compliant cartons: an FNSKU on every unit, poly bags where the product needs them, box content information for every carton, shipment labels on the outside, and a freight appointment for anything on a pallet. A factory loads a container to maximize cube. Cartons are floor-loaded to the ceiling, master cartons hold inner packs, units carry the manufacturer barcode and nothing else. If that load arrives at a fulfillment center, the best case is a refusal and the normal case is a bill: the inbound defect fee exists precisely for freight that shows up out of spec.

The prep center is the translation layer. It takes the container the way the factory built it and sends Amazon the shipment the way Amazon wants it. Everything in the middle, unloading, counting, palletizing, labeling, bagging, box content, is the work.

The Five Legs, and What Each One Costs in 2026

Ranges are market benchmarks published by 3PL pricing guides and Miami drayage carriers for 2025 and 2026. They are not PrepVia quotes. PrepVia numbers are the published ones: prep from 0.40 dollars per unit, a 24-36 hour standard prep window, Net-30 terms.

Floor-Loaded or Palletized at Origin?

A floor-loaded container fits roughly a third more cartons than a palletized one, because pallets eat cube. That is why factories default to it. The price is paid at the other end: unloading a floor-loaded 40-footer is manual work, one carton at a time, and it takes hours instead of the forty minutes a palletized load needs with a forklift.

Port Free Time Is the Clock You Cannot See

Once the container is discharged, the terminal gives you a handful of free days to pick it up. After that, demurrage accrues daily. Once it leaves the terminal on a chassis, a second clock starts: detention on the container itself until the empty is returned. Both clocks are short and both are billed to whoever the forwarder points at, which is usually you.

What Happens on the Dock

A good receiving dock does five things in order, and photographs all of them. It counts cartons against the packing list as they come off. It logs condition: crushed corners, wet cartons, broken seals. It verifies SKUs against the ASIN map, because factories mislabel master cartons more often than anyone admits. It palletizes by SKU so the prep line can pull one product at a time. Then it hands the pallets to prep, where the standard window at PrepVia is 24-36 hours from receiving to ready.

The photographs matter more than they look. When Amazon later reports a shortage on the inbound, the receiving record is the only independent evidence of what actually arrived. Our guide on proving Amazon received your shipment covers the paper trail from the dock forward.

The FBA Inbound After the Container

The container was one shipment. Amazon will want it as several, split by fulfillment center, unless you take the option to send it all to one place and pay the placement fee. Our position has not changed: the fee buys Amazon's internal network. One shipment to the closest FC, the fee paid, the inventory live in days instead of a three-way split that lands in three weeks. The full argument is in the placement fee guide, and the freight choice for the domestic leg is in SPD vs LTL to Amazon FBA.

Your Checklist Before the Vessel Sails

Frequently Asked Questions

Can a container be delivered directly to an Amazon fulfillment center?

Only if every carton inside already meets Amazon's inbound requirements: FNSKU labels on units, poly bags where required, box content information per carton, shipment labels, and a booked freight appointment. Factory-loaded containers almost never meet that bar, which is why the normal path runs through a receiving dock and prep center first. Non-compliant freight that reaches an FC is refused or billed as an inbound defect.

How much does it cost to unload a floor-loaded 40-foot container?

Published 3PL benchmarks for 2025 and 2026 put a floor-loaded 40-footer at roughly 250 to 500 dollars for the unload, with receiving billed on top at about 5 to 15 dollars per pallet built. Palletized containers cost less to unload because a forklift does the work. Drayage from the port to the dock is a separate line, commonly 350 to 650 dollars from PortMiami to a local warehouse.

How long does a container take from the dock to live FBA inventory?

Count three blocks: the unload and count, usually the same day; prep, which at PrepVia runs on a 24-36 hour standard window from receiving to ready; and the inbound to the fulfillment center, which depends on whether you ship to one FC or split and on Amazon's check-in time once the truck arrives. The container itself is rarely the slow part. The split decision and the FC check-in are.

Should I palletize at the factory or at the US dock?

Palletize at origin when cartons are heavy or fragile, when you are paying detention and need a fast unload, or when the goods go straight to storage. Floor-load when the product is light, cube is the constraint, and the dock has crew booked for a manual unload. Either way, the pallets Amazon receives are built at the US dock by SKU, because that is where the FBA shipment plan is decided.