AbeBooks specializes in rare books, and provides a marketplace for sellers of expensive tomes dotted all over the world.
Maybe they do sell rare, expensive books, but that's not my impression. I've bought quite a few books from Abe, and I don't think I've ever paid more than a fiver including postage. Second-hand bookshops are an excellent way to buy a nice copy of anything that's not a recent publication.
Biting the hand that feeds IT
