I got this applied to my Leon back in November. I paid £100 for it which I didn't think was too bad! When I arrived to collect the car I had to wait for an hour as the car wasn't allowed to leave the garage until a certian time!
I'm very impressed, the car is so much easier to wash and even when it's filthy it's still shiny! Oh and you get a bag full of AutoGlym goodies which I'm sure costs almost £100...
Well worth the money in my opinion. (only if they charge £100 though!)