You Get What You Pay For

On the radio station 1010 WINS, I learned a new idiom.  There was a report about a meeting in New York between black community leaders and the police department in which the black leaders urged the cops to learn to talk to street kids using the language and idioms of the street.  Reverend Calvin Hobbs also suggested that the police receive higher salaries.  “If you pay peanuts,” he said, “you get monkeys.”  Anyone know the origin of this expression or other examples of its use?