All the stories are available in other anthologies. If this is your first collection of short stories, then have at thee...good listens.
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.
Where to begin? Okay the humor was great. It's dry and witty. Which I LOVE!