See who owns the Buy Box, at what price, and every competing offer — and track it over time.
Uses: Buy Box
The Buy Box drives the overwhelming majority of Amazon sales — but you never own it for good. A competitor undercuts you, a third-party seller lists on your ASIN, or you briefly go out of stock, and the featured offer silently moves to someone else. Usually you find out from a sales dip, days later.
Seller Central shows your offer — not the live featured offer or the full set of sellers competing for the box on any given ASIN.
zip to see the delivery estimate a shopper in that location gets.Buy Box for a mid-range ASIN — you (SellerB) are not the featured offer:
| Offer | Seller | Price | Fulfillment |
|---|---|---|---|
| Buy Box | SellerA | $24.99 | FBA |
| Competing | SellerB (you) | $24.49 | FBM |
| Competing | SellerC | $25.80 | FBA |
| Competing | Amazon.com | $26.00 | FBA |
You're actually $0.50 cheaper than the winner — but the box went to an FBA offer on Prime speed, not the lowest price. The fix is fulfillment, not another price cut.
Illustrative example using representative data. Your live results reflect the marketplace at lookup time.
The payoff: know in real time whether you hold the Buy Box, who took it and at what price, and whether you're losing on price or on fulfillment — then fix the right lever, or get alerted the moment the box flips. Live, across 21 marketplaces.
Run this lookup live in your browser, or connect over MCP / REST.
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