e Bay is the world's largest personal online trading community. eBay created a new market: efficient one-to-one trading in an auction format on the Web.
Individuals—not big businesses—use eBay to buy and sell items across thousands of diverse categories, including collectables, antiques, sports memorabilia, computers, toys, beanie babies, dolls, figures, coins, stamps, books, magazines, music, pottery, glass, photography, electronics, jewellery, gemstones, and much more. Users can find the unique and the interesting on eBay—everything from chintz china to chairs, teddy bears to trains, and furniture to figurines.
As the nation's favourite online marketplace, buyers are compelled to trade on eBay due to the large number of items available. Similarly, sellers are attracted to the abundance of buyers. At any one time there are more than 10 million items for sale live on the site and more than 1 million new items every day from which users may choose. In the first three months of 2002, 5.6 million items were listed for sale on eBay UK alone.
http://www.ebay.com

uBid was founded in 1997 and swiftly emerged as a major force in the e-commerce world. Today uBid, part of Petters Group Worldwide, is a brand name marketplace that offers leading manufacturers' merchandise to consumers and businesses at prices even lower than wholesale.
uBid's mission is to be the most recognized and trusted Business-to-Consumer marketplace, consistently delivering exceptional value and service to its customers and supplier partners.
http://www.ubid.com/

Get a Yahoo! ID and password for access to Yahoo! Auctions and all other personalized Yahoo! services.
http://auctions.yahoo.com/

The GSAAuctions.gov site has been developed to complete GSA's transformation to an all-electronic asset management system. The site offers the general public the opportunity to bid electronically on a wide array of Federal assets. The auctions are completely web-enabled, allowing all registered participants to bid on a single item or multiple items (lots) within specified timeframes.
http://gsaauctions.gov/

Everyone is welcome to list items for sale at Amazon.com. We offer several ways to sell your items to our millions of customers, each with its own advantages.
Amazon Marketplace is the best place to sell new, used, refurbished and collectible items--you list your item right alongside the same item carried by Amazon.com. Amazon.com collects no fees unless you sell. http://s1.amazon.com/

QXL is an established, safe & easy auction site with more than 2 million members across Europe. QXL lets you buy or sell almost everything including football memorabilia, DVD movies, laptops, PCs and vintage comic books. Currently more than 6,000 listed items for sale in the UK.
http://www.qxl.com/

Baazee.com is a person-to-person trading community on the Internet where anyone can sell or buy almost anything in an exciting e-commerce format. Baazee.com, through a world-class Internet trading infrastructure, has created an online market place that is free of middlemen and unconstrained by geographical boundaries. It promotes interaction between buyers and sellers where items can be bought and sold at prices determined in real time. In other words, baazee.com enables frictionless interaction between buyers and sellers.
Launched on March 29, 2000, Baazee.com, has over 1.3 million registered users and offers a wide range of item categories from, computers and IT, mobile phones, books and magazines, electronics, fashion, video and music, household, toys and games and travel items. Items have been placed under 15 different categories so that buyers can access them conveniently.
Baazee.com India Pvt. Ltd, a subsidiary of the New York based Baazee.Com, Inc. started its operations in India in January 2000. Headquartered at Mumbai, baazee.com has 4 network offices in India.
http://www.baazee.com