Manoir aux Quat'Saisons charges £25 inclusive of the landing and take off (I asked today)
They couldn't give me any information about whether they provide any safety crew, security, escort to the building etc., but did say their movements are limited due to the nearby village. I guess you get nothing.
Even £25 is irritating when you are going to pay big bucks in the hotel anyway: I was going to head over there with some friends, but I've been before and there seem to be plenty of alternative hotels which allow you to land free whose lunches I can try before getting round to going back to the Manoir or any other pay-per-landing site.
I dare say they won't miss me or the 3 minutes flying time they would bill me to land, but it's the only way I can make the point!
BW