I joined Audible when I could not find the audiobook that my wife suggested to me. I took a 30 days trial offer and it turned out alright. Unfortunately, the book that I was looking for was boring so I exchange it for one I liked better (That was easy).
I was bothering the live chat customer service because I found out that I could not search for specific phrases in specific categories (ex. Podcasts only) they were polite and responded in a friendly manner.
By the end of the free trial, I received an email with notification for the end of my trial. I decided to continue my subscription. In my opinion, it is worth it even if not every single thing on Audible is perfect.