Kindle Unlimited (Amazon US)
$ 0.99 for 3 months
Renews at $11.99/month afterwards
At last! I've been waiting for a deal on KU and here's the Black Friday offering. YMMV, check the Kindle Unlimited page on your Amazon account to see if you qualify.
This link may or may not work.
Enough time to finish the series that I started from AG Barnett and PJ Fitzsimmons for me!