As others have said, I would have ended up taking the 12K and let them deal with the scratches. Attempts to shave-off a few hundred are always to be expected. When I went to sell my 116710LN to a well established 2ndary dealer in Athens, they came up with the excuse that it had been purchased abroad! I argued that I could spend the minimal €500 on a service at the RSC nearby and come back with a 2 year warranty and then my asking price would of course be different. They quickly came to their senses
But the enlightening moment was the opening of the case (or better, the attempt on it). The case back opener jumped and shaved two teeth from the case back while they scratched the bracelet against the counter. The epic comment was that the brush would take care of it all. I let them deal with the mess in the way they know and walked away with a nice sum on my bank account.
And these are some more reasons why I am NOT buying grey, apart from the scalping.