How much could one expect to spend on a 2008 used Audi convertible?

According to Kelley Blue Book, the average retail price for a 2008 Audi A4 convertible in "fair" condition is $10,931, while the average retail price for a 2008 Audi S4 convertible in "fair" condition is $20,261. Prices may vary depending on the specific model, mileage, condition, and location. It is always a good idea to do your own research and compare prices from multiple sources to get the best deal.