Dear Mr Scheiner,
Eppraisals.com links to
GoTo Auctions
http://search.auctions.goto.com/default.asp
which "represents well over 7 million items daily from more than 300 auction
sites and B2B exchanges including Amazon.com Auctions, eBay and Yahoo!
Auctions". However, (a) it searches eBay separately from the rest; (b) it
searches only the headings (titles) of lot-descriptions, and not the
descriptions themselves; (c) the syntax is unclear; (d) there is no 'advanced
search' facility; and (e) results cannot be ranked usefully.
I remain
Yours cordially,
Jay Dillon
Jay Dillon / Rare Books & Manuscripts
http://www.abebooks.com/home/jaydillon