If you bought a real live dead-tree book from Amazon anytime between 1995 and now, you may be able to buy its e-book version for $2.99—or less—with an upcoming program called Kindle MatchBook.
Unlike the Kindle Lending Library, any book you buy through the MatchBook program will be part of your Kindle library, and readable on all devices that run the Kindle apps, not just on Kindle devices. In addition to the $2.99 price point, Amazon says that some MatchBook titles will be priced at $1.99 or $.99, and some will even be free.
The catch is that the publisher of the paper books has to agree to participate. Amazon says over 10,000 books are already in the program, including John Irving's "A Prayer for Owen Meany" and "The Ocean at the End of the Lane," by Neil Gaiman. Great reads, for sure, but nowhere close to the flaming-hot J.K. Rowling/Stephanie Meyer/Suzanne Collins triangle.