Probably would not try another book by this author, but the narrator was good overall.
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.
One of the best new characters I have found, no more Will Robie coming over the horizon I was chuffed to find Victor