Seller Fulfilled Prime vs FBA Cost Calculator
Compare estimated fulfillment cost between SFP and FBA assuming item is stored for one month.
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Loads the inputs and runs the comparison instantly.Cost Comparison
Awaiting your inputs- FBA fulfillment
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- Storage (1 month)
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- Pick & pack
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- Storage (1 month)
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- Packaging
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- Shipping (zone 3)
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What’s not included?
This quick calculator intentionally excludes costs that require a fuller SKU and network analysis. Amazon may also assess storage utilization and aged inventory surcharges that are not modeled here.
- FBA inbound placement fees
- Transportation into Amazon
- Distributed SFP inventory
- Inventory positioning freight
- Safety stock
- Replenishment
- Multiple fulfillment locations
- Carrier contingencies
- Returns
- Storage utilization surcharges
- Aged inventory surcharges
- Other Amazon or 3PL fees
FBA base storage-rate assumptions are based on Amazon’s published US monthly inventory storage rates (opens in a new tab). Amazon fees change periodically; verify current account-specific fees before making a fulfillment decision.
Other Benefits of SFP
Seller Fulfilled Prime can provide operational benefits beyond the per-unit cost shown above.
Keep Inventory in Your Network
Your inventory stays in your fulfillment network instead of being locked inside FBA. That can give you more control over where inventory sits, how it moves, and how quickly you can react.
Adapt Faster When FBA Changes
FBA receiving times, inventory deadlines, capacity restrictions, and operational policies can change. SFP gives merchants another way to keep Prime-eligible inventory moving without relying entirely on FBA.
Control How Orders Are Fulfilled
With SFP, merchants have more direct control over fulfillment execution, packaging, inventory availability, and operational troubleshooting instead of handing the entire process to FBA.
Share Inventory Across Sales Channels
The same distributed inventory can support Amazon, Shopify, Walmart, B2B, and other channels instead of maintaining a separate pool of inventory only for FBA.
Offer Fast Delivery Beyond Amazon
A fulfillment network built for Prime-speed delivery can also help offer faster delivery promises on your DTC and marketplace orders — where faster delivery may support conversion and customer experience.
Reduce the Risk of Relying on FBA
SFP can reduce dependence on a single fulfillment program by giving merchants another Prime-capable fulfillment path while supporting the rest of their ecommerce operation.
Need a Detailed SFP Expert Analysis?
This quick calculator compares one unit. Cahoot can help model the parts it doesn’t capture — including distributed inventory, fulfillment locations, inbound freight, replenishment, carrier strategy, and your actual SKU mix.