Just picked up a dealer used 07 r350 with 8k miles and extended warrenty through june 2012. decent options: P1 package, wood rim, panorama sunroof, sirius, harmon kardon sound, power tailgate, 18" tires, parktronic, navigation and heated seats. Since it was a dealer car i'm listed as first title. I picked it up for about 37,500 (41k out the door with taxes and fees). Originally listed at $52,760. did i get a good deal?