Amazon has Michael Crichton Kindle ebooks on sale:
Prey $1.99 -
https://www.amazon.com/gp/aw/d/B000FC13E0/

Pirate Latitudes $1.99 - https://www.amazon.com/Pirate-Lat...002T9U302/

Google Play has them on sale as well:
Prey $1.99 - https://play.google.com/store/boo...M0TnSV03kC

Pirate Latitudes $1.99 - https://play.google.com/store/boo...5a7WmAtRcC