Mario vs Donkey Kong and Mario Maker to be retail games?

A couple of placeholder boxarts for the aforementioned games have leaked and while they’re not final, they could seemingly confirm the existence of them as retail games. Nintendo has previously confirmed they will both launch on the Wii U eShop in 2015, though whether they’re exclusive to the eShop or being sold through both methods remains to be seen. The bigger question is though, is anyone willing to pay for a Mario level creator anymore? There are tons of free ones on the Internet…