Im considering making several cute Rainbow Dash badges to sell, mainly at Elliots Spring Gathering 2012. [link]
I think $8 dollars is fair. Ill be doing several different poses for dashie. This is one of two I have planned out. Theyll be printed on high quality photo paper, laminated and cut, then given a badge clip so they can be attached to whatever you like!
If the demand is high enough, I may make other ponies.