I've always thought these were massively overpircrd, and coirdct me if I'm wrong, but didn't one of the pimps get banned here for touting and generally being a bit of a twat?
The parties were organised by an enterprising punter and one of his 'faves' as far as I could tell and I guess crossed the line as far as UKP was concerned.
A party was raided and I believe that there was a threat of prosecution hanging around for a while so obviously kept their head down.
A bit on the pricey side I guess for some, but the economics of 4:8, day rate on an apartment and TBH the risk means that it is different from a 3:18+ party held at a 'club'. A very different feel to it also and there is some value in 20s and hot vs 40s and gagging for it. I have done both and they were both equally fun.