If anybody is interested for pair of wind deflectors with TUV approval
for their A3/S3 model 2003-2009 this is what i found;
Audi A3 / S3 3 door 2003 - 2009 wind deflectors 2pc set | eBay
I already asked them for group buy and still waiting for reply,
when they will get back to me i will give you all the informations!