This _might_ be Audiobooks.com's best trial offer right now.
I've learned to check the monkey god's (aka tubemonkey's) O.P. first, before posting such deals, and it appears that it hasn't been posted there yet.
Details are here:
https://www.audiobooks.com/landing/p...eLanding/LP51?. The extra benefit that stands out to me is that this promo offers _three_ audiobooks during the trial period, rather than two.