Group:
So that you don't overpay for rare, out-of-print books, please be sure to visit bookfinder.com, which is a metasearch site that will give you instant pricing data on every bookselling site on the web. Often, there is a great difference in pricing between, say Alibris.com, Abebooks.com, Amazon.com, etc. The most liquid site is Amazon, so prices tend to be higher. Few people know this, and therefore pay more.
I don't want you to pay more.
Time to sign off - I must be off to dinner!