Prostitution Pornography USA (1971)

Yeah, it’s a “documentary” , but I think it fits here.  If it gets deleted, I understand though.
A candid look at the sex trade, supposedly by means of hidden cameras and microphones, Pornography Prostitution USA is a voyeur’s delight. This almost no holds-barred “documentary” includes interviews with the participating call girls, streetwalkers, and porno starlets. From grindhouse sexploitation master Harry Novak.