1. From the eBay home page, click "Advanced" to the right of the "Search" button.

2. At the top left of the resulting Advanced Search page, click "By Seller" under Find Items.

3. In the Sellers section, check the box for "Only show items from:"

4. Then type the name of the seller in the box next to "Include"

5. Click "Search" or press , and you're done.