This isn’t a subscription. It’s a one time charge of $40.
I decided to give it a shot because I’m definitely not reading any books now so anything to get that content into me would be useful. I figure if i listen to a condensed version and it really piques my interest I will be more likely to go back and read the long form original to get the full benefits. Figured a one time fee of $40 was reasonable to try it out and see if it helps.