Congrats on the grille!
Regarding limited availability, when I spoke to Audi about my new bumper cover, they told me there were exactly 2 left in the US. I ended up buying it through ECS, but they got it from Audi, so I would imagine there is now only 1 left in the system in the US! And all of the used-bumper places I checked that recondition bumpers said they have no RS6 bumpers in stock and none coming in the foreseeable future. Who knew parts were so rare..