Yep, Rite publishing commissioned the map. As part of the agreed price I retain the rights to sell the map packs of the map - though in reality I do so in partnership with Rite. It's sold through their RPGNow and Paizo sites and they do a lot of the web marketing. However I do all the pdf creation, cover, maptool campaign file creation. It woulds out pretty well - but yes, its a specific contract worked out with those guys. In the map pack it has a line saying that the map is © Rite Publishing and that it's used with permission.

Oh, and Google Images modron (don't worry, it should be safe for work ). They're an old D&D race - one of the weirder ones.