I just made a post regarding something along these lines last week. As a city copy investigating sex crimes, I have seen some genuine torture movies. I don't recall any that involved an actually killing (although who knows what happended to those poor girls after the filming was completed).
I'd have to think you'd be a real moron to try to market something like that commercially.
And for the record, no, I'm not into it! I draw the limit at good old fashioned torture!