About two weeks ago, I did some free work for a local band that's looking to get some exposure. They initially specified that they wouldn't be able to pay me for the time that I did at the show, but since I took some "really awesome" photos (their words, not mine) for them, they've decided that they want to use the photos for some posters and their website and this magazine article. I'm all for them using my work for all of these different purposes, but I wanted to know what I have to do to be fairly compensated. I don't want to rob them, because they are funded out-of-pocket by the band members, but I also want to make SOME money if they are using them for these different things. I would also like to keep the rights to the photos.
WHAT DO I DO??