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.
Heritage Book Shop
Antiquarian book shop specializing in rare books and manuscripts.
Haven Books
A general used, rare and out-of-print bookstore; hardcover books with an emphasis on non-fiction, including antiques, military, railroad and aviation. Based in Winter Haven, Florida.
Horizon Books
Travel, voyages, exploration, natural history and gardening; rare, used, antiquarian & out-of-print books.
Hawsbank-books.co.uk
Secondhand reference books and non-fiction texts for sale, listed by category with description of contents.
Hillside Books
Books on insects and related topics.
Half A Moon Books
A selection of books in many subject areas.
Harold Doan
Used, out-of-print, rare and antiquarian books. Searchable index of inventory.
Henry Hollander, Bookseller
Antiquarian and scholarly bookstore specializing in Judaica.
High Ridge Books
Antiquarian and used books.
Haymes and Sons
Catalogue includes art, architecture, travel, exploration, military, natural history, sport, theology, fashion, theater.