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.
				
			 
				 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		
 
 
		 
 
		 
 
		 
 
		 
 
		