I had my 18" (wheel that is!) refurbished by wicked wheels (Wolverhampton van). Mine was only very slight damage, nera the tyre rim and I think he just buffed it out and re-laquered it. Not a bad job. However, they aren't able to get the "Chrome Shadow" paint and have to mix it up themselves to get the best match. The normal practice is to repaint the whole outer rim, but leave the rim top and spokes as original. The different viewing angle apparently makes it virtually impossible to tell. Cost: £65 - about as good as you are going to get I would think?