2. We've pretty much established that "selling one's body' is a logical impossibility, unless one is selling it to a med school as a research cadaver, and even then they can't collect it until you're already dead.
3. I would be, too. 3 million is an outlandish sum, possibly the highest ever paid for a single sex act.
4. We've only seen two still photos, which appear to be of two entirely different people- one mildly unattractive, one mildly attractive.
They can't both represent her actual appearance, since they don't look alike at all. We really have no idea what she looks like.
What about prostitutes who do not do business with married men? What about prostitutes who do not have disease? What is your reasoning for being against them? There is no exclusive connection between prostitution and this things.
What about people with disease who are not prostitutes having sex? What about people who have sex with married people who are not prostitutes?
Are you actually against the act of prostitution, or disease and infidelity?
I think you would be very interested in the writings of Lord Patrick Devlin, especially "Morals and the Criminal Law." He was a brilliant man who argued for much of the same thing you do here. You may have already read it, but here it is just in case:
Morals and the Criminal Law
Devlin and another man, named H. L. A. Hart, had some extensive debates on this issue. Very cool stuff if you can find it all.