Wow, insane, as you say.
I remember a few lads only weekends in the early '80's, strolling down St Anna Strasse, I think it was, and some of the girls were stunning. Back then it was 50 guilders - about £17 - for which they'd lie there like a sack of potatoes. An extra 25 guilders, though, got you a decent blowjob and fuck. Alas very different now, by the sound of it.