"Why's that? Are they afraid they're going to get ripped off?" It's publish or perish in the academic world. Maybe wizards take the "perish" part literally.

Her question catches him off-guard, even though technically he asked. "Uh... Caspar Millen." He doesn't sound terribly sure about that. It was the name given to him when he became a sleeper agent. Does that count? He keeps petting Crookshanks and decides not to worry about it.