>The theory treated sex as a valued good for which there is a marketplace in which women act as sellers and men as buyers. The initiation of a sexual relationship corresponds to a transaction in which men offer women other resources in exchange for sex. Those resources correspond to the price of sex [...]

>The analysis of sexual interactions as social exchange, with sex itself as a female resource, appears capable of supporting a broad range of testable predictions. It is also a potentially useful link between nature and culture