Contest prizes and art trades - should I let it go?

[growly.livejournal.com]

How serious do you consider it if someone doesn't make you a prize you won in a contest?

What about art trades, how far should you pursue someone about a piece owed?

I've sort of given up about some things I'm owed, after waiting five years for one, and two years for another. I think it might be overkill and whiny to post about these things I'm owed, because no physical money was involved (except postage and shipping materials on the trade). And I don't want to make these people mad at me, either. One of the people I'm on good terms with. :/ Maybe that's a poor reason to not to post about somebody, but I hate burning bridges.

Should I just let it go and forget about it completely, or do you think I need to continue to ask about my art?

Selling Copyright?

[vibris-sae.livejournal.com]

I was recently commissioned to design a logo for a roller derby team. However, I have been asked to sell the copyright. I don't mind doing so, but I am pretty naive about this sort of thing.

The team is pretty amateur, but they plan on merchandising with t-shirts. The commission fee is $100. What should I charge for the rights?

Thanks a_b!