The Humble Weekly Sale this week is for is for 6 games from bitComposer games
For just $1 you can get Air Conflicts: Pacific Carriers, Galaxy on Fire 2: Full HD, Thunder Wolves and Jagged Alliance Classics.
Pay $6 or more and get the above plus Jagged Alliance: Crossfire and Expeditions: Conquistador.
All prices are in US dollars and exclude tax. All games are digital downloads for the PC, Mac or Linux and include Steam keys (except for Jagged Alliance Classics which is DRM free).