Beat Buy Box

What it does

Beat Buy Box sets your price just below whoever currently has the Buy Box — not the lowest price overall.

What's the Buy Box? The “Add to Cart” button on an Amazon listing. About 83% of sales go through it. Winning the Buy Box is the single most important factor in Amazon sales. Multiple sellers compete for it.

When to use it

  • You want to win the Buy Box specifically (not just be cheapest)
  • You want to price higher than Beat Lowest when possible
  • The Buy Box winner is priced higher than the lowest offer

When NOT to use it

  • The Buy Box is always held by the lowest-price seller (then Beat Lowest is the same)
  • You want to maximize profit above all else (use Profit Maximizer)

How it works

  1. Checks who currently holds the Buy Box and their price
  2. Subtracts your undercut amount from the Buy Box price
  3. Applies floor/ceiling/safety checks
  4. Sends to Amazon

Key difference from Beat Lowest: If the Buy Box is at $35.00 but the lowest offer is $28.00, Beat Lowest would price you at $27.99. Beat Buy Box prices you at $34.99 — $7 more profit per sale.

Example

  • Buy Box price: $35.00 (held by an FBA seller)
  • Lowest overall price: $28.00 (an FBM seller with slow shipping)
  • Your undercut: $0.01

Beat Lowest → $27.99
Beat Buy Box → $34.99 (much better!)

The Buy Box algorithm considers more than just price — fulfillment speed, seller rating, and more. So the cheapest seller doesn't always win it.

Settings

SettingDefaultWhat it does
Undercut amount$0.01How much below the Buy Box to price
When no Buy BoxMatch lowestFallback if no one has the Buy Box

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