TBH if you know someone who can pull the SKC of your cluster then can do it all yourself through vcds mate, thing is coding takes 30 mins anyway which is fairly small charge at audi, but unless you're gonna change the locks etc in the dealership car park then they'd have to do the lot at same time which is where costs mount up, given car wont drive when its having the locks all changed, so cant exactly do locks then drive to dealer to have coded unless you tape the old key to the barrel for immo purposes