Outstanding Whispersync deals continue to get hard to find lately. This is one of the better ones that I've seen lately, especially considering that the Audible price is $31.95.
The Sane Society. By Erich Fromm. Definitely for the more cerebral among us (which definitely leaves me out). 4.8 stars.
$5.98 WS.
https://www.amazon.com/dp/B00BPJODJO.