The Indie Gala is back for its third mobile release. Pay what you want for four Android games, and if you offer more than the average, you'll get your hands on five more. The average is currently under $4. At less than 50 cents per game, I've bought gum balls that were more expensive.
Handy sliders are situated at the bottom of the page that allow you to divide your payment between the developers, charity, and the Indie Gala folks themselves.