I guess my biggest problem with this is how much extra is charged for the case with the game. Most of the SNES repros are $60, but $70 with a case. I just don't see how the cost of that one case, that one sheet of paper, and the ink used on that paper equals out to $10, if all that those who are buying the game and case are paying for is the materials.
That, and he's charging money for something that is available for free online. I guess I can understand for some people who don't really have all the resources to buy the cases and print the covers out themselves, but still.
Credit would be nice (to either the creator or the site), but he can't really ask for permission to use them, since none of it is original material. Regardless, people will never stop trying to make money off of any of the covers provided on the site and on the forums, so there isn't a whole lot that we can do about it, other than maybe ask that there be a link to the site in the item description.
That's just my two cents.