I own an audi a6 in chicagoland area, do u know any non dealer locations to get new key made. I have valet key?

i know dealer prices will be expensive. i am seeking other options. i have valet key, but lost my transponder. any ideas?I own an audi a6 in chicagoland area, do u know any non dealer locations to get new key made. I have valet key?Dealer and dealer only.