My personal opinion.

  1. Its insults there value as women implying they can be bought as a ' single ' cash for sex transaction
  2. It undercuts the level of resources aquired through traditional means. i.e women marries a wealthy man and is instantly entitled to %50 his networth and propertys. ( could be amounts up to millions of $ ) . Prostitute only few hundred $ per session . not quite the same dynamic for cash involved.

Any thoughts .. please comment.