Dont think so, but why not just use the ebay search for your seller?
In fact, you can add your favorite seller to *my favorite seller* and ebay will email you when they list new things.
Or, I just save my favorite sellers page bookmarked and with Firefox I have several sellers set up in their own bookmark folder, so I just click the *open all in tabs* and then I can browse them at my leisure.
Cant see the point on taxing AS' resources with those sorts of searches when ebay is much more effective