Almost all of Audible Original Shows / Comedies are free today. Buy for free (need to be subscribed) and keep after canceling membership.
I got this link in mail today. It leads to a page where you get to add one seemingly randomly selected episode from a few Audible Comedy shows to your cart for free. I looked around and found out that you can actually add the entire seasons of those shows and other Audible shows to your cart for free.
Audible has several original shows and comedies available for paying subscribers in Audible Channel. Now entire seasons of those shows are available in main Audible service, outside channels. If you are not a member, you can buy each show season for ~ $25. But if you are a member, you get to "buy" those seasons for free today. And if you cancel your membership later, you still get to keep those in your library.