If you are talking about the 17" version, which are easy to repair - I used Chipsaway (west london), about £70 per wheel, they come to you, and it takes about an hour and half.
if you run a search on the Mk5 forum, there was a posting before christmas about a company that do 18" monza repairs, the tricky ones, where you send the wheel to them and they get them looking like new.
hope that helps.