Ive been looking at something to drive until the new S4 is released, therefore Ive been looking at S3 prices.
Brand new 10% is easy to achieve and if you are looking at the old shape 15% is easy as there is extra support from Audi on them.
Al´s car is overpriced IMHO. Yes it has buckets, but that limits the market a little, it has high miles and is missing items someone like myself like - GSM for example.
You can get an 08 car for 21-22k from an Audi dealer with much lower milage. In fact you can see a nicely loaded car for 24k. Not that difficult to knock the dealer down on these cars for a quick sale - 22.5k for example. I know I would rather the 08 car with Sat Nav, GSM etc.
Not knocking Al´s car, but I would say that 20k is more of where its at and that is set to fall quickly.