I don't know what to charge just yet--it'll depend on how much work ends up going into the thing, but I don't know that $15 for--hey, exactly 15 parodies. Huh--is a bad idea. The base cost at Cafe Press is $4.99, so I'd basically be making a $10 profit, which is pretty good. Again: thoughts?
(This doesn't preclude doing anything else. I'm just saying, it seems like a fairly good compromise on this particular idea.)