Well, my agent charges 10% of what he can get for my services, so if a gig costs the venue £100, I see £90 of it, which is fair enough. More to the point, make sure your agent is actively seeking work for you. It's quite easy for agents to just concentrate on the big names on their books, which means us obscure people don't get so much of a look in. Phone your agent a couple of times a month and badger him a bit!EJ