Fair enough! I mean, I kinda get it: we are in fandom for the love of it all. For the love of Buffy or SPN or hockey or what have you. Once you start charging for it, other constraints come into play. More mercenary considerations, I guess?

I've heard tell of writers asking for pay to consider writing chapters of their longer fanfic works and THAT made me go "Ewwww." But I don't think one-off commissions are quite so "ewwwwie." In fact, know of many professional big time scifi-fantasy artists who do the odd fanart commission on the side.

Anywho, let me know if you figure it out; I'm interested!