What a Seller ID Looks Like
Seller ID is a unique Amazon merchant identifier used to identify a seller account or storefront. SellerSonar can use seller-level data to track sellers, Buy Box ownership, and competitor activity on monitored ASINs.
A Seller ID usually looks like a long Amazon merchant token made of uppercase letters and numbers, for example A1B2C3D4E5F6G7. Users may also see it in Amazon URLs as a seller= or me= parameter. This helps distinguish a Seller ID from a Brand Store ID, which is connected to a brand’s Amazon Store rather than an individual seller account.
Seller ID vs Brand Store ID
- Seller ID: Identifies an individual seller account or storefront.
- Brand Store ID: Identifies a brand’s Amazon Store. See the Brand Store ID entry.
Why It Matters for Monitoring
Providing a Seller ID lets tools follow that seller across ASINs — useful for tracking Buy Box ownership, competitor activity, and unauthorized sellers.
How SellerSonar Uses It
SellerSonar uses seller-level data to track sellers, Buy Box ownership, and competitor activity on monitored ASINs — surfaced through Buy Box Monitoring, Competitor Monitoring, and Hijacking Alerts.
Start your free SellerSonar trial today.