To me, there's not really a gray area...if I am understanding this correctly. If a dude sculpts for the love of a character, has no license to do so and charges for it, what does it make him?
It all depends on the amount of the charge and the intent.
If I am being charged $35 for a head sculpt, that is clearly a charge which basically covers the cost to get it made.
If I am being charged $90 for a head sculpt, that is clearly someone trying to mooch from a license which they don't possess.
Seems like a pretty clear and reasonable line to draw for me.