I feel like the only really bad part of that article was that he keeps people in the dark about what's truly going on. I have no issue with him letting the artist name their price, though I'm not anywhere near a professional artist so I'm not sure how much my opinion factors in to all of this. I'm of the opinion that if both parties agree and are happy with the price of work, then it's fine. In the case of possible royalties though, I would think it ought to work like it does for music in movies and video games (I assume it works almost identical as far as royalties are concerned). I've never had to research how it works, but it seems to me if someone needs something for a video game, then maybe some sort of contract should be drawn up witch spells out what's to happen in the case of possible royalties. I dunno...just my two pennies.