As a fanartist who's never charged for it (I can't speak for digital folk, but conventional art supplies are hella expensive), I'll just say that I do fanart for fun, not money.

On the other hand, we have some terrifically talented creators in his fandom. Great fic (and art!) take time, talent, and yes, a part of the person who creates it. If the pro-level writers and artists want to charge for their time and talent, and others are willing to pay for said talents . . . more power to them. :)