Screen-Shot-2013-09-03-at-9.21.40-AMAmazon has rolled out its Kindle MatchBook, a new program that allows customers the option to purchase discounted Kindle Editions of print books that they have purchased new from Amazon. The eBook editions are sold as an add-on purchase. Most cost somewhere between free and $2.99.

Amazon first announced the program in September with 10,000 books and has now enrolled more than 70,000 books into the program. The feature works for books purchased all the way back to 1995, the year Amazon opened for business. Publishers must enroll these titles in the program.

Participating publishers include: HarperCollins, Macmillan, Houghton Mifflin Harcourt, Amazon Publishing, Wiley, Chronicle Books, and Marvel. ”It’s been great to see the positive response to MatchBook from both readers and publishers,” stated Russ Grandinetti, Vice President, Kindle Content. “MatchBook enrollment has grown from 10,000 to 70,000 titles in just a few weeks and we expect it will keep expanding rapidly in the months ahead.”