Are you hip to Tiny Showcase? Tiny Showcase offers affordable art from a varied group of artists by offering small limited-edition digital prints of their work.
Each piece is "around the same price as a CD, book or record..." and a percentage of each sale goes to the artists charity of choice.
They sell out super fast, (often within minutes of the art being posted) so you need to be quick. They are pretty hush-hush about who the artist will be and the print for sale (a new one goes up each Tuesday evening) , but I got a source and tonight it is our own Jennifer Davis.