Another point as far as file conversion. If you have any tablet or reader with a reasonable amount of memory Amazon will allow you to have a free Kindle reader program for your tablet. Barnes and Noble has a free Nook reader program. As always there is more money to be made in media sales than hardware sales. Both sites also have a large amount of free older books. And some that are very cheap... And some that cost a little more. My tablet carries both Nook (epub) and Kindle (mobi) and tons of books (if they were made of paper).