There is an Open Media SF bundle on Groupees:
https://groupees.com/scifi
For a minimum of $1 you get:
- Snake Agent by Liz Williams
- Moving Mars by Greg Bear
- Refugee by Anthony Piers
- The Blue Hawk by Peter Dickinson
- Sunshine by Robert McKinley
- Agent of Byzantium by Harry Turtledove
For a minimum of $12 you also get:
- The Genome by Sergei Lukyaneko
- Patton's Spaceship by John Barnes
- Midshipman's Hope by David Feintuch
- Dragonholder by Todd McCaffrey
- Schismatrix Plus by Bruce Sterling
- The Disfavored Hero by Jessica Salmonson
- The Burning Land by Victoria Strauss
And certain books might be added as a bonus if certain number of bundles are sold. The first one is: Night Train to Rigel by Timonthy Zahn