Hey guys.
I'm in a bit of a pickle. I was approached at ConVersion by someone who said they knew someone who would be willing to pay me for a cover illustration for a book of short stories done for a contest. Unfortunately, when she brought said person over to talk to me, I found out they usually DIDN'T pay for their cover art. Immediately I knew that they already thought I had agreed to the idea. I told them I would need to be paid to do cover work. They said that they could probably wrangle some cash up for it, but they want to full out commission me a black and white illustration for this cover, but allow me to keep the rights of it to sell it as a print afterward.
She only wanted to pay me the price of what one of the prints would cost. Of course this is fairly unacceptable, as I only sell my prints for about 10 bucks each. I've never had someone commission me before and be okay with me selling prints afterward though. Should I still charge the same amount as a normal commission of this caliber would cost? Or take into account the non-exclusive rights?
Any help on this would be fab. I'd love to just do a pic for them, but as a starving student and artist... I just can't. ; \

