Amazon Seller Shipping Guide 2025
FBA vs FBM, Buy Shipping discounts, carrier selection, and cost optimization for Amazon sellers.
FBA vs FBM: Which is Right For You?
| Factor | FBA (Fulfilled by Amazon) | FBM (Fulfilled by Merchant) |
|---|---|---|
| Storage | Amazon warehouse (fees apply) | Your own storage (free) |
| Shipping | Amazon handles it | You ship directly |
| Prime eligibility | Automatic Prime badge | Seller-fulfilled Prime (harder) |
| Customer service | Amazon handles | You handle |
| FBA fee example (1 lb item) | ~$3.22 fulfillment + storage | $0 fulfillment (your labor) |
| Best for | High-volume, small/light items | Large/heavy items, low volume |
Amazon Buy Shipping (FBM Discounts 2025)
Amazon Buy Shipping gives discounted rates when you print labels through Seller Central. Carrier protection included.
| Service | Buy Shipping Rate | Retail Rate | Avg Savings |
|---|---|---|---|
| USPS Ground Advantage (1 lb) | ~$4.20 | ~$8.00 | ~48% |
| USPS Priority Mail (1 lb) | ~$7.95 | ~$9.80 | ~19% |
| UPS Ground (5 lbs) | ~$9.80 | ~$14.87 | ~34% |
| UPS 2nd Day Air | ~$18.50 | ~$28.00 | ~34% |
| FedEx Ground (5 lbs) | ~$9.90 | ~$15.42 | ~36% |
Rates vary by account volume and region. Access via Seller Central → Orders → Buy Shipping.
Key Amazon Seller Shipping Rules
- Ship within handling time — Late shipment rate must be under 4% to avoid account suspension
- Use valid tracking — Valid tracking rate must be 95%+ (Amazon monitors closely)
- Purchase Buy Shipping when possible — Automatically uploads tracking and provides A-to-Z claim protection
- FBA size tiers — Small standard (under 0.75 lbs) = lowest fees. Check size tier before sourcing products
- Reimbursement claims — Amazon loses ~1% of FBA inventory. File reimbursement claims monthly
- IPI score — Keep Inventory Performance Index above 450 to avoid storage restrictions