Kindle MatchBook was officially released today. The program allows you to purchase the Kindle version of certain physical books you have purchased in the past and on all subsequent purchases starting today. The Kindle versions will range from free to $2.99. Currently they have about 70,000 books in the program. Now you can have the best of both worlds for a decent price.
Personally, I was able to buy Joel Green’s commentary on Luke in the NICNT Series for $2.99 because I originally bought the physical version a couple years back. Enjoy!