Hello - I'm looking at a 2002 M5 with 86k miles. Seller asking $40k. Lots of service history and new parts. Sterling grey over black standard leather, all stock, aluminum trim, sunroof and rear shades. I don't think it has PDC, fold down rear seats or M Audio. Clean Carfax with no accidents 6 owners.The guys seems a bit firm on price. Personally, I think it's overpriced by at least $5k. Input welcomed.
No idea, but, Autotrader.com is useful for seeing what's out there and price-shopping. The others also like cars.com - can use kbb.com as a general idea, also nadaguides.com