All Ive seen from the same style of repair is crap. They just blob it in....I can do that myself Its even worse when Ive seen them do bigger repairs such as bumper corner's...makes a car look tidier when sat on the pitch but the quality of the repair soon fades away. I managed to repair a chip on my cossie, it was right on top of the nsf wing, happened shortly after being painted. I kept touching it in to build it up, then wet flatted it and re-mopped it....its was 99% (Im noted for being picky apparently lol) invisible but it took a fair few hours to acheive, something that the likes of chips away in my experience are not willing to do.