I'm a librarian who loves anime, manga, and reading a wide variety of genres.
I've seen the TV series and read the book - now I finally get to listen to the radio drama. The biggest complaints in reviews seem to be "This is like listening to a TV show" and "It's too short." The first one gets a shrug from me since, hey, it's a radio drama. The second one, combined with the price, was what made me drag my feet about hitting the "buy" button.
So far so good, although it seems to take a little more concentration (or a different kind of concentration?) than audiobooks.