This is terrible deal for this car at this time.
You should be able to get 30%+ off with the 15K audi money.
AUdicare is 1179 on the S6.
This is the deal I got --> $83K Audi S6 - $673 per month (w/Audicare), $1416 + MSDs DAS
PM me if you are serious and looking for something. I reached out to 10+ dealers in my search and one of those dealers is looking to unload. I can help connect you.