Yeah I know about that map. It's from 4 dungeon magazines and Paizo was publishing them at the time. I haven't bought one of them so I don't know if they are original or something they printed to sell back when the magazine published and they are still selling them off. Either way, I am sure they have the licensing rights to sell it. As for new products, WOTC owns the rights to Greyhawk and right now you just cannot publish commercially for it.