FBA vs FBM Repricing
Amazon treats FBA (Fulfilled by Amazon) and FBM (Fulfilled by Merchant) sellers differently when deciding who wins the Buy Box. Repricefy accounts for this automatically.
How Amazon's Buy Box algorithm works
The Buy Box considers (among other factors):
- Price (including shipping)
- Fulfillment method (FBA has an advantage)
- Seller rating
- Handling time (how fast you ship)
- Delivery speed
FBA sellers have a built-in advantage. Amazon trusts its own warehouses for fast, reliable delivery. So an FBA seller at $25.00 often beats an FBM seller at $24.00.
What this means for repricing
If you're FBA
- You can price slightly higher than FBM competitors and still win the Buy Box
- Repricefy knows this and won't unnecessarily undercut FBM sellers
- Focus on: Buy Box Targeting or Profit Maximizer strategies
If you're FBM
- You need to price lower than FBA competitors to compensate for the fulfillment disadvantage
- Your handling time matters: 0-day handling is much better than 3-day
- Focus on: Beat Lowest or Beat Buy Box strategies
How Repricefy handles fulfillment
Repricefy is “fulfillment-aware.” This means:
- It knows your fulfillment type (FBA or FBM) for each product
- It adjusts undercuts based on competitor fulfillment:
- Competing against FBA? Undercut more aggressively (they have the advantage)
- Competing against FBM? Undercut less (you're on even footing, or have the FBA advantage)
- OOS handling differs:
- FBM + supplier OOS → qty set to 0 (can't fulfill)
- FBA + supplier OOS → qty stays (inventory is in Amazon's warehouse)
Handling time (FBM only)
If you're FBM, your handling time affects your Buy Box chances:
| Handling time | Buy Box impact |
|---|---|
| 0 days (same-day ship) | Best chance — closest to FBA speed |
| 1 day | Good chance |
| 2 days | Moderate — need to price lower |
| 3+ days | Difficult — significant price disadvantage needed |
Tip: If you're FBM, set your handling time as low as you can reliably deliver. Every extra day costs you Buy Box wins.
FBA + FBM on every plan
Repricefy doesn't charge extra for FBA or FBM support. Every plan includes both. You can have a mixed catalog with some FBA and some FBM products — the repricer handles each one appropriately.