Where can I find price of parts and repairs for Audi A3 2007?

I'm thinking of buying an Audi A3 2007 2.0 FSI , normally aspirated. I'd like to know where I can find real info on what it would cost to repari if A/C broke down, or to replace shocks, fix a console etc etc. Also if anyone thinks this is a money eating car in terms of repairs please let me know also. Thanks!|||YES AUDI ARE REALLY EXPENSIVE CARS TO MAINTAIN THERE ALSO REALLY TIME CONSUMING TO WORK EVEN AN OIL CHANGE