⚖️ 3PL vs Amazon FBA Cost Comparison Calculator
Compare your true monthly cost between Amazon FBA and a 3PL fulfillment provider. See which option is cheaper for your business.
Your Business
Amazon FBA Settings
3PL Settings
3PL vs Amazon FBA — Full Cost and Feature Comparison
The 3PL vs FBA decision is not purely a cost comparison — it is a strategic choice about channel mix, brand control, and growth stage. Most successful brands use both: FBA for Amazon orders (Prime eligibility drives conversion), and a 3PL for direct-to-consumer, Shopify, Walmart, and other marketplace orders where FBA cannot fulfill.
| Factor | Amazon FBA | 3PL |
|---|---|---|
| Prime Eligibility | ✅ Yes — major conversion boost | ❌ No (unless SFP) |
| Multi-Channel Fulfillment | ⚠️ Yes, with MCF surcharge | ✅ Native multi-channel |
| Custom Branding / Inserts | ❌ Not allowed | ✅ Full control |
| Kitting & Subscription Boxes | ❌ Very limited | ✅ Standard service |
| Q4 Storage Fees | ⚠️ $2.40–$6.90/cu ft (very high) | $20–$45/pallet (more predictable) |
| Returns Handling | ✅ Amazon handles for Amazon orders | You or 3PL handles |
| Inventory Control | ❌ Limited visibility | ✅ Full control |
| Contract Commitment | None | Varies (30-day to 1-year) |
When FBA Wins
FBA wins when: your business is primarily Amazon-focused, your products are small and lightweight (FBA fees are most competitive for standard-size items under 3 lbs), inventory turnover is fast (avoiding long-term storage fees), and you sell at a price point where Prime conversion improvement justifies the cost premium. For a $30 item where FBA might cost $8/order but Prime eligibility improves conversion 30%, the revenue benefit often outweighs the cost difference.
When a 3PL Wins
A 3PL wins when: you sell across multiple channels (DTC Shopify + Amazon + Walmart), your products require custom packaging or inserts, you sell heavy or oversize items where FBA fees are disproportionate, your inventory moves slowly (FBA aged inventory fees are punishing), or you need to build a brand experience that Amazon's generic packaging cannot provide.
People Also Ask
Yes — this is the hybrid approach used by most scaling brands. Send your top-selling Amazon SKUs to FBA for Prime eligibility. Use a 3PL for DTC fulfillment, Walmart orders, eBay orders, and any multi-channel fulfillment. The 3PL also serves as backup inventory for Amazon when FBA stock runs out. Many 3PLs can do FBA prep to send replenishment into Amazon.
MCF lets you use your FBA inventory to fulfill orders from other channels (Shopify, eBay, etc.) but charges a surcharge on top of standard FBA fulfillment fees. MCF is convenient if you already have FBA inventory but is generally more expensive than a dedicated 3PL for non-Amazon orders. MCF also ships in plain Amazon-branded packaging with no custom branding option.
FBA storage fees jump to $2.40–$6.90 per cubic foot from October through December. A 3PL's pallet storage at $20–$45/pallet/month is significantly more predictable and usually much cheaper during Q4. Brands that hold large holiday inventory in FBA can pay 3–5× their normal monthly storage costs in Q4 — making a 3PL with predictable storage rates more economical for holiday inventory.