I'm an artist and I hate the amount of commission galleries charge. If you like one of an artist's pieces, wait until after the exhibition and approach them privately: you'll get the picture for half the price and the artist will make more money.
@fesshole
I used to pay 40% commission at two galleries, while 50% is quite common. Now I refuse to pay more than 20% commission, so I have no gallery and no exhibitions anymore.