$50 doesn't seem like much for a gig...in my case it's a 5 minute drive across town. I play and am back home in two hours. And I usually play twice a month or more at that price. So, my take from that one place for about three hours total(twice a month) is about $100.

I asked the AD what would happen if I upped my price to $75 an hour? She said the would pay it and have me come about once every three months.