There are many reasons why a book might be unavailable.
Sometimes a book goes temporarily out of print - and sometimes no audio version has ever been recorded. Audible wants to give you the most complete selection we can and we'll keep adding series and filling in gaps as quickly as possible.
The way the story line keeps the characters real and moving the story along with their strenghts and weakness of each of them
Really enjoyed this book. It gives you a better insight on how one can adapt to thing around, and what one must do to survive.
This series keeps you wondering what's going to happen next. easy to get wrapped up in the story and lose track of time.
This one of the few series that I can't put down once I start reading. Feeling sad only a couple more books till it ends.....