For growing Amazon sellers, FBA and 3PL fulfillment solve different parts of the logistics problem. Fulfillment by Amazon places inventory inside Amazon’s network and handles picking, packing, shipping, returns, and customer service. A third-party logistics provider gives sellers more control over where inventory is stored and how it moves before reaching Amazon or the end customer.
The right choice depends on sales volume, inventory turnover, customer location, and whether the brand also sells through other channels. For many established sellers, using FBA together with a 3PL can provide more flexibility than relying on either model alone.
What Is the Difference Between Amazon FBA and 3PL Fulfillment?
The main difference is who manages the fulfillment operation and where inventory sits. FBA is Amazon’s fulfillment service, while a 3PL operates independently and can support Amazon replenishment, direct-to-consumer orders, or multiple sales channels.
Amazon FBA covers storage, picking, packing, shipping, returns, and customer service for FBA orders. Sellers pay fulfillment and storage-related fees, with costs varying according to factors such as product size, weight, inventory levels, and services used.
| Factor | Amazon FBA | 3PL Fulfillment |
|---|---|---|
| Inventory location | Amazon fulfillment centers | 3PL warehouses |
| Amazon order fulfillment | Yes | Most probably |
| Direct-to-consumer orders | Through eligible Amazon services | Yes |
| Inventory control | Within Amazon’s network | Managed with the 3PL |
| Multichannel flexibility | More limited | Broader |
| Amazon preparation | Seller or prep partner | Can be handled by a 3PL |
This distinction matters when a seller needs inventory outside Amazon’s network. A 3PL can hold reserve stock and replenish FBA inventory when required instead of sending every shipment directly from the manufacturer to Amazon.
When Should Growing Amazon Sellers Use FBA?
FBA is often suitable when Amazon is the seller’s main sales channel and predictable access to Amazon’s fulfillment network is a priority.
Amazon manages the operational work after eligible inventory enters its fulfillment network. This can reduce the warehouse workload for sellers who would otherwise need to manage individual orders, returns, and customer service themselves.
However, FBA does not make inventory management disappear. Amazon charges fulfillment and storage fees, and its current fee structure also includes considerations such as aged inventory and inbound placement. Sellers should therefore evaluate the total fulfillment cost rather than looking only at the per-unit fulfillment fee.
FBA is particularly practical when:
- Most sales come through Amazon.
- Inventory turnover is relatively predictable.
- The seller wants Amazon to handle customer fulfillment.
- The seller can forecast replenishment needs accurately.
- Amazon fulfillment economics remain attractive for the product’s size and sales volume.
When Does a 3PL Make More Sense for Amazon Sellers?
A 3PL becomes more useful when the seller needs inventory flexibility beyond Amazon’s fulfillment network. Instead of sending all available inventory into FBA, a seller can keep reserve stock with a 3PL and replenish Amazon based on demand.
This approach can also support businesses selling through Amazon, Shopify, their own websites, or other channels. A 3PL may manage receiving, storage, picking, packing, returns, and FBA preparation as part of a broader fulfillment workflow.
For example, Lansil Global operates fulfillment facilities in Shenzhen, Pennsylvania, and Nevada. Its services include China fulfillment, US fulfillment, and Amazon FBA preparation, allowing brands to position inventory according to their supply chain and customer requirements.
For sellers sourcing from China, this can be especially relevant. Lansil Global’s China operation supports sourcing and manufacturing coordination, while its US facilities provide domestic fulfillment. Its Amazon FBA prep services can also prepare inventory before it enters Amazon’s network.
Should Amazon Sellers Use FBA and a 3PL Together?
For many scaling brands, a hybrid FBA-and-3PL model can be more practical than choosing one fulfillment method exclusively.
A seller could keep fast-moving Amazon inventory in FBA while holding additional stock with a 3PL. When FBA inventory needs replenishment, the 3PL can prepare and ship another shipment to Amazon. Meanwhile, inventory intended for other sales channels can remain outside Amazon.
This structure can help sellers separate three different logistics needs:
- Amazon fulfillment: FBA handles eligible Amazon orders.
- Inventory buffer: The 3PL stores reserve stock outside Amazon.
- Multichannel fulfillment: The 3PL can support orders that do not need to go through FBA.
Lansil Global’s USA 3PL fulfillment service operates warehouses in Pennsylvania and Nevada and offers a 2–4 day delivery range across the US. Its China fulfillment operation can also ship internationally, giving brands additional options for inventory positioning.
The most suitable model should therefore be evaluated using actual SKU velocity, storage requirements, customer destinations, inbound costs, returns, and sales-channel mix rather than assuming that one fulfillment method is universally cheaper.
How Should Growing Amazon Sellers Choose the Right Model?
Start by comparing total fulfillment costs and operational requirements, not just the advertised fulfillment rate.
A useful evaluation includes:
- Average monthly units sold by SKU
- Product size and shipping weight
- FBA storage and fulfillment costs
- Inventory turnover and replenishment frequency
- Percentage of sales outside Amazon
- US versus international customer demand
- Returns and reserve-inventory requirements
For a brand sourcing from China, the decision also turns on how fast stock moves from factory to warehouse to FBA.
Lansil Global can support this broader supply-chain workflow through China sourcing, manufacturing coordination, warehousing, US fulfillment, and FBA preparation. Sellers considering a move from an FBA-only model can discuss their SKU profile, order volume, sourcing location, and target markets with Lansil Global to determine whether a 3PL or hybrid approach fits their operation.
In short, FBA works well as an Amazon-focused fulfillment network, while a 3PL adds inventory and multichannel flexibility. As an Amazon business grows, combining the two can provide a more adaptable fulfillment structure without requiring the seller to manage every logistics function internally.
