I recently opened for commissions, and my second offer is from a friend of mine who's looking to commission an illustration for a published work.
The work is an RPG rule set and framework, similar to D&D. The base rulebook itself is already complete and available online in .pdf format (the illustration would be for the print version), and they are already partnered with Game Parlor for publication and distribution - so although it's a small, independent publication, I'm less concerned about this being "legit" and more questioning "how do I approach this?"
Price has not been established, though already the commissioner understands that a 300dpi illustration suitable for printing isn't going to be "cheap." He's willing to compensate me fairly, he's waiting for me to quote a price that I think is fair. What do you charge for a work that's going to be printed in a book and sold for profit?
Are there specific legalities I need to be concerned about while I'm negotiating the terms of this commission?
Any input would be highly appreciated.