So, this is new. Instead of just a $5 bundle of games, they have a weekly sale where you can get the game and some other neat stuff as well.
The first one is Bastion.
For $1, Unlock Bastion on Steam and DRM-free downloads.
For minimum, Digital Soundtrack (MP3/FLAC), Bastion Digital Art Pack, Bastion Sheet Music, Bastion iPhone/Android Ringtones.
For $25+, Bastion Bandana, Bastion Original, Soundtrack CD, Bastion Postcard, Transistor Postcard.
That's pretty awesome. Hope weekly really means weekly.
https://www.humblebundle.com/weekly