It may just be an Audi thing regardless of dealer. I remember the last time I went to drive an Audi, my wife was needing a car and she really liked the A4. When it came to discussing numbers, the salesman gave me some line about it being a low volume car and that they didn’t have room to deal. He kept a straight face even when I laughed.
We leased a 3 series sedan within a few days of this.
It’s a competitive market. Dealers compete against each other and against other dealers from other mfgs. You hold the cards. You have the checkbook. If a dealer doesn’t want to compete, they lose.
You might try contacting No. Cal and San Diego dealers, Las Vegas dealers and Phoenix dealers to see what they can do for you. Then see if the locals are interested in meeting the best offer.