商业类搜索引擎及目录索引

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拍卖 Auction：

Allauctionguide.com - The search engine that is exclusively for online auction related sites. Lists auction sites in a variety of categories. Also provides information on auction software and services.

auction27.com - Search your favorite online auctions at the same time.

Auctionguide.com - The guide to auctions and auctioneers world wide. Also provides an auction calendar, listings of auction software, schools, tips, articles and more.

Auctions-portal.com - Auctions search engine and guide.

Biddersedge - Search multiple auction sites at the same time

BidFind - Auction search.