Spoke to Bosch. Apparently Bosch Aero Twin is the OEM version on our car. I have 07 A3 2.0

Front set: 3 397 118 929
Rear: 3 397 004 772

he recommended these sites
partsamerica.com
rockauto.com
alloemautoparts.com

Not sure how the Bosch Aero Twin compares with the Trico though

 

My local O'Reily's said it would take 3 days to see if they could order them and then another 3-10 days to get them in if they could. I saw RainX is selling them, but they say 4-6 week delivery. Gave up and went to the dealer yesterday. Fortunately the dealer isn't near a mall