Hi Shopp,
I've already mentioned the GB to the closest RS6-friends but they don't need a mirror replacement.
Problem is that I can't tell if other French RS6 enthusiasts are fluent enough to post here and I suspect they won't go through the hassle of registering to this forum just for this. But if the vendor can propose a direct mail/contact so that they could participate/contribute to the GB and help to reach the next discount level, I can mention the offer more publicly on the French forum, no problem.