Just click on any of the book covers to visit the book’s Amazon page! The authors have told me all books will be either free (if newsletter subscription is required, I’ll note that), 99c. or $1.99 at the time of posting. But please check prices before buying. These prices may not be available in all countries, and many are time-limited. Also, as I haven’t read all the books, I can’t vouch for the content.