No, a man using a woman for sex when she can not give consent is already called "rape" and is illegal, because we as a civilization understand that this causes significant trauma for individuals -- that is, it's categorized as "violence".

Buying services and goods, on the other hand, is not violent, like rape is, although we could see the fact of poor people (or all people, really) having to sell portions of their lives to strangers to survive as unfortunate and alienating. This is, I think, where Marxism comes from.