> It is a pity that they are so expensive.

Some of these books are over 40hrs long I listen to. My current book, Oathbringer, is 55hrs. I find the length and professional voice acting to provide more than enough value for the $15/month audible charges (hope I don't sound like a shill).

Certainly better than 2 movies a month, imo :)

edit: I do wish you got a free kindle version with audible purchase...