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.
Espace Lollini
Offers space philately-related catalogs and albums.
DAVO USA
Offers stamp albums, mounts, stock books, tongs, magnifiers and accessories.
Lindner Publishing
Sells all stamp and coin accessories by Lindner.
Ultra Vision Inc.
Super Sizer & Super Gauge for accurate stamp measuring.
PhilatelicBooks.Com
Helps you compare prices and shipping rates of stamps and stamp collecting books from 9 online bookstores.
Subway Stamp Shop, Inc.
Offers stamp and coin albums, accessories, catalogs and reference books.