2006 A4 Quattro Cabriolet 3.0l v6
101k
There has been just one or two very small drops of oil leaking from the car after it sits overnight.
Took it to an Audi Dealership to get it checked out. They said they 'cant see where exactly the leak is coming from' but the camshaft seals would need to be replaced, along with a valve seal or two and some other seal. Basically, the leak is very small, but its hard to get to. The seals are like 5 or 10 bucks ea. labor is 150/hr which is reasonable considering where I live.
Again, got home last night, pulled it in garage only after i completely covered the floor in white paper. Pulled it out this morning, there were two oil drops the size of quarters.
With the 2500 dollar quote, i started to consider selling,
bought it at 93k for $5500 august 2015.

 

Find a reputable indy shop that knows Audis/German makes. I don't know where you live, but around here, $150/hr labor is robbery. That being said, the V6 is more complicated and things are harder to get to, so it still might be a long job, but you should be able to do a lot better than $2500. The shop I go to charges $85/hr and he's a master certified VW tech.