I don't know that they sell a lot here in general stores about it. It seems the schools of sorcery play their cards close to their chests, and keep their own knowledge to themselves. It would be of no advantage to them to share it widely given the sentiment about them.

[Of course, there is the fact that people here treat Moran's powers as magic, something he himself has never referred to it as. In Huangdao, Star Masters are just a fact of life and necessary to balance.]

I have heard they do accept apprentices if your inclinations lie this way.