Shipping direct from your supplier or freight forwarder into Amazon cuts a handling step, but it forces your whole order to fit Amazon's capacity, prep and receiving rules at once. An FBA 3PL adds a buffer that stores bulk inventory, preps it and replenishes Amazon in waves. Here is how the two compare.
| Factor | Specialist FBA 3PL | Direct from supplier to Amazon |
|---|---|---|
| Prep control | Units inspected and prepped in the U.S. before each shipment | Depends entirely on factory accuracy; errors found at Amazon receiving |
| Capacity limits | Bulk held outside Amazon, released to fit limits | Entire order must fit current FBA capacity |
| Storage cost | Pallet-rate storage for most inventory | All inventory stored at FBA rates and exposed to surcharges |
| Stockout risk | Replenishment ready from nearby bulk stock | Restock depends on the next production run and ocean transit |
| Inbound placement | Shipments built from a domestic origin with options compared | Placement handled from overseas or the port with fewer choices |
| Other channels | Same stock serves DTC, Walmart and wholesale | Inventory locked in Amazon unless removed |
| Handling steps | Extra receiving and outbound step | Fewer touches, lower handling cost |
| Best fit | Growing catalogs, imports, multi-channel brands | Small, steady catalogs with reliable factory prep |
When direct-to-Amazon works
Direct-to-Amazon works when your supplier reliably preps to Amazon spec, your orders are small enough to fit capacity limits, and you sell only on Amazon. In that case, skipping a warehouse saves a handling step and some freight.
Where it breaks down
Direct shipping breaks down as volume grows. Larger orders collide with capacity limits, storage surcharges rise as more inventory sits in FBA, and any factory prep error is discovered only after it reaches Amazon, where it is hardest to fix. Restocks also depend on the full production and ocean cycle.
The hybrid option
Many brands use both: the factory applies FNSKU labels and packs to Amazon carton specs, part of the order ships direct to Amazon, and the rest lands at a 3PL as a replenishment buffer. That keeps handling low while protecting against stockouts and fee spikes.
The verdict
Direct-to-Amazon is a reasonable choice for small, Amazon-only catalogs with dependable factory prep. Once volume, SKU count or channel mix grows, an FBA 3PL buffer usually costs less in total by reducing stockouts, surcharges and inbound errors.
Frequently asked questions
Is it cheaper to ship directly from my factory to Amazon?
It can be cheaper on handling, but total cost often rises once capacity constraints, FBA storage surcharges and stockouts are counted. Compare landed cost per sold unit, not handling alone.
Can my supplier do FBA prep?
Many suppliers can apply FNSKU labels and pack to Amazon carton specs. The risk is that errors are discovered only at Amazon receiving, so a U.S. inspection step is valuable.
Can I split one shipment between Amazon and a 3PL?
Yes. A common approach is sending part of an order direct to FBA for launch or immediate cover and landing the rest at a 3PL for later replenishment.