What level comic? Many clubs have open mike night where comics don't get paid. Starting comics work from there up. When starting, you probably even have to pay for your own beer. Many comics do a route, staying in a condo provided by the club and eating meals provided by the club with barely enough to cover gas to the next gig. Often comics work for the take at the door, might bring in $30-50 a night in a decent club when split between the comics appearing.
I have a friend who, with his wife, does stand-up at county fairs for half the year. He makes the money on the t-shirts, CD's, DVD's and other stuff he sells. He's popular with the fair organizers because his routines are safe for families and he does an afternoon matinee that's all kiddie jokes. Think elephant jokes and knock-knock jokes with barnyard animal content and you'll know what he does. He's retired but not social security age yet and nets about $15,000 a year doing this for about six months. And that's pretty decent money for 90% of comics out there.
Jeff