I have this, and I haven't been overly impressed.
They can't refurb diamond cut wheels at the roadside, naturally, so you have to take your car somewhere, and they just give you money towards the refurb, not cover the cost as I was led to believe.
I had some paint chips done in my work car park, which was convenient, and when the guy arrived I told him I had spotted some other ones, and he was happy to add them on.
When he finished up and left, I went out to check the work and he'd used plain white paint on my white silver car. Thankfully, they were so tiny that you really have to look for them, but really, the company chosen by VW can't get the colour right? Just made me think it wasn't worth the hassle.
Luckily, mine was chucked in for "free"
Oh, and they can't do stone chips on "large flat areas" such as the bonnet