Been doing this for a long time, and I have heard all the complaints. So I figured I would take a minute and clear up something.
BANDS TO DO NOT CHARGE OR SET COVER CHARGES. Clubs and Venues charge and set cover charges.
So if a cover charge is an issue for you, please take it up with the venue. Bands work hard (believe it or not) and set a price in advance. The cover charge RARELY goes to the band. That money goes to the club.