First off, I would like to thank so many of you for your advice, it is much appreciated.
I did smell a rat when they told me the price, but I could not find anywhere on the net that sold one...
The dealership in question was Motorline Volkswagen in Tunbridge Wells, Kent. A fairly new dealership with all kinds of different apes working there by the sounds of it! :evil:
They also told me that the supercharger had it too, but since it is losing power that is a possibility. I am considering taking it to Jabbasport for a stage 4 job. Any suggestions there?
Once again thanks all, and avoid Motorline if possible... :)