That sucks.
When I needed another key on an old A6, I tried to go the cheap way, and bought a used fob and a blank key on eBay. I called a few dealers and none of them would cut the key.
Eventually, IIRC, I ordered the key from a VW dealership. I had to bring them in my car ownership and they ordered the key. I used the used fob I bought from eBay, but remembered thinking later, after I got quoted a complete key for the VW dealer, I should have just bought the whole key brand new from them.
There was a guy on AZ recently from an Audi dealership that said he could get discounts for people on OEM parts. I would get a quote from him first on a new complete, and see what he can do.
If you want me to search for his info, just let me know.