So how much is everyone paying for the timing belt replacement
along with waterpump, seals etc.
And is there an online site with geniune Audi parts that will be cheaper
than the dealer?
2005 A4 1.8 Quattro

 

You can get a kit for about $300 that has everything you need. I just had mine done. I was going to do it myself, but was not able to. I found a local shop that did the replacement for a total of $900 including tax. Dealership wanted $1800.

 

Check Volvo Parts, BMW Parts, European Car Parts | FCPGroton.com - many of us use their kit and stand by it. Where are you located? Quite a few of us work on these cars on the side.

 

I looked into timing belt change, around $800 and they would also change another belt while they had the front end taken apart

Found some cheaper authentic parts from a dealer of Audi parts in KY