I think I would because I know a lot of people like this kind of book even though I only thought it was OK.
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 History of it and the telling of Sophia (Aka Catherine the Greats) life before fame