- Auctions are a kind of business. People have something they want to sell and auction it to the person who offers the most. Regarding business: the domain business.com has been auctioned for $7.5 million and therefore as the most expensive web address ever. But the real gems are, inconspicuously at first, among the totally normal auctions. Bizarre, funny, astonishing, unexpected, shocking-Not "business as usual" but - just amazing!