Originally posted by jive1
To embellish on what Eric said:
If you are in a contract with that agent, you will have to pay the booking agent a commission for anytime you play a venue they booked for you in the past, regardless of whether or not the agent booked the gig.
For example, Billy and the Boingers have a contract with Steve Dallas as their booking agent. Steve hooks up the Boingers with a gig at the Whiskey-A-Go-Go. Boingers play a great gig, and the crowd at the Whiskey loves them. The owner of the Whiskey has a falling out with Steve Dallas because Steve was caught sleeping with his old lady. But since the Whiskey crowd loves the Boingers, the owner wants to book them again. He calls Bill personally to get them to book a future gig. But due to the contract, Steve Dallas still gets his cut even though he did nothing to get them the 2nd gig.
Maninbox, you're pretty right on with the commission. Most agents will charge 10 to 15 percent. 15% percent seems to be about the norm in most markets. Some agents will also charge a sliding scale, where they get a higher or lower percentage depending on what a gig pays. For example: 15% for gigs up to $1000 a night, 20% for all gigs above $1000.
As Eric said, the yellow pages are a good source for finding more reputable agents. If the commission is an issue, you can get a friend that can sell snow to eskimoes who is willing to travel a bit to schmooze the club owner/manager. If the friend live in the area, you want to gig even better. If the person is a regular at one of the venues you want to play in, even better.
My last bit of advice is: if you are going to use a professional booking agent, get your ducks in order. That means get your promo stuff like photos, demo CDs, references, press coverage, business card, website, etc. the best you can get them. Get your act honed, and be ready to put your best foot forward. Booking agents get tons of bands wanting their services, but only a few of those bands will ever make the guy any money. The bands that make him/her money are the ones they will spend their time with. A booking agent will have a list of "A bands" that are cash cows that make a consistent income for them. Then he/she will have a list of "B Bands" who have potential to make money or are able to play at venues when their "A band" can't make it. If the booking agent is good, even a "B band" can get plenty of decent work. The list of "C bands" consist of the bands whose CDs and promo material are piled up on the floor of their car or desk that they might get to someday. This not where you want to be, so you gotta show that you have something that the "C bands" don't. Your goal should be to get in as a "B band" and possibly work your way up to an "A band". Best way to do this is to use your promo stuff to show the agent that he/she has the potential to make some money off of you, and then put your money where your mouth is and perform.
Best of luck, ManinBox