You have to be 18 to legally work as a sex worker in France although the legal age for consent for sex is 16.

The whole issue has nuances in my opinion. Taking an individual escort home for sex is different to bringing 13 young women from Eastern Europe for a group of politicians to act out violent and bestial sex. It depends how much the woman knows what she has consented to, and how far she has control over that.
It depends how much money is offered. DSK is reported to have offered that hotel maid one million to drop the assault case, and she chose money over retaliation. If a woman can earn more than she would otherwise earn in her lifetime... perhaps sometimes financial survival is just about chosing one trauma over another trauma.

Would it be different if women were usually the pimps and men the prostitutes? Is that role reversal conceivable? Some of what feels wrong to me is the acting out of traditional male hierachy, male disconnectedness issues?