“Yeah,” said Whit. “We don’t never go there. Clara gets three bucks a crack and thirty-five cents a shot, and she don’t crack no jokes. But Susy’s place is clean and she got nice chairs.”
– John Steinbeck
Of Mice and Men, Chapter 3. Because of the loneliness of the rancher life, the men view women as sexual objects instead of people. So they pay to have sex in the whorehouse.