When we went to buy our Mk7, the car we went to see (having done 4000 miles) had an ill fitting rear bumper that was a different shade of white. The salesman said it wasn't and got me to compare it to a similar car that he 100% assured me hadn't been painted. Straight away I pointed out a run in the paint on the rear bumper, to which he had no answer. In the end we bought a car that had done 60miles, but even that had a stone chip on on of the mirrors.
Basically, don't expect perfection. It won't exist.