Indie Gala has the Spring Rush Bundle live at their site.
Pay $1 minimum for:
Paranautical Activity: Deluxe Atonement Edition
The Joylancer: Legendary Motor Knight
Deep Dungeons of Doom
Pay $3.89 minimum for above plus:
Down To One
The Old City Leviathan
Last Knight: Rogue Rider Edition
Surgeon Simulator 2013
All activate on Steam.