What prices do i charge for a portrait session of a rock band?

I'm going to start shooting some bands. My question is that i believe the prices should be higher than the typical one person portrait session. The rock band pictures that they're going to use for their website,fliers, ect. Most of the local bands don't have a lot of money to be blowing on pictures. So I want to price higher than the typical one person portrait photoshoot but yet not to high they can't afford it.

This 5 member rock band i'll be shooting. I was thinking $500 flat rate and give them a cd of the edited pictures. Because they're going to be using weird sizes for posters and fliers, ect. They're not going to care anything about me printing up the photos to send to their friends & family. lol