A bunch of Martha Wells (Murderbot) ebooks are in a recent Humble Bundle. All the released Murderbot series and these five other books as well.
* Witch King
* The Book of Ile-Rien
* The Emilie Adventures
* City of Bones
* Wheel of the Infinite
https://www.humblebundle.com/books/martha-wells-murderbot-and-more-tor-books