Froogle:
Developed by Google, Inc. One of the most promising price comparison sites to date.
BizRate:
One of the largest price search sites. Over 30 million products listed.
Shopping.com:
Child of Dealtime and Epinions, now merged to provide you with three shopping search engines that feature your products separately, yet the same.
Yahoo Shopping:
Complete Yahoo Shopping data feed creation and maintenance solutions.
MSN Shopping:
Complete MSN Shopping data feed creation and maintenance solutions.
NexTag Shopping:
Complete NexTag data feed creation and maintenance solutions.
PriceGrabber Shopping:
Complete PriceGrabber data feed creation and maintenance solutions.
Sunbow Books
Used books searchable by author, title or keyword.
Straight Arrow Publications
Used, rare books, and first editions. Includes reviews and links, specializing in historical matters; also has Native American genealogy.
Sigler Press
Out-of-print books about Biblical studies, theology, church history, and pastoral care.
Simpson Books
Specializing in modern, out-of print, first edition collectable books, many signed by the author.
Skriptoriet Used Books
Scandinavian used and antiquarian books and online entry of book location requests. Bilingual, Swedish and English.
Second Story Books
Used books; Mystery and Science Fiction catalogues issued regularly.
Sheringham Books
Sells fiction, while linked Whirlwind books sells non-fiction.
Sage Old Books
Modern first editions, author signed books, Australiana, plus wide range of 19th and 20th century used books.
Stackstreet Books
Rare literature, first editions, poetry, science-fiction, graphics, New Zealand.
Sean Fagan, Rare Books
Book seller offering a searchable database and photographed catalogs of scarce books in many fields.
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