Whether you're looking for more auctions from a favorite merchant or want to pad out a shipment with some extra items, use the Advanced Search page to search eBay by user ID or use See Other Items on a listing page to find what you're looking for.
Search for a User
EBay's Advanced Search Page has a user search to find the seller you're tracking down. To reach this page from most eBay pages, click Advanced near the search button and choose By Seller.
If you know the seller's exact ID, enter it in the search bar and click Search.
Or, if you don't know the seller's precise ID, check Show Close and Exact User ID Matches and search for your best guess to see a list of users with similar names.
Find More Items from a Seller
If you're already looking at a listing and want to find more items from the same seller, you don't need to use the advanced search page. Just click See Other Items in the Seller Information box near the top of the listing page.