Classic Audi - they still have the 2 S5's there , one priced at $59,440,the other at $58,840. They are located in Eastchester ,near White Plains.Ask for Richard . Personally - I would pass on Palisades Audi and the dealer in Jersey City. Paul Miller in Parsippany is great- ask for John van Ost .Their service department is terrific . Type if you need more info or contact #'s.
Jack Daniels in Fair Lawn likes trade in vehicles. I've been shopping for an A6 wagon and they were selling their S5's at $5,000 over sticker. They have an R8 for sale .They wanted $170,000 something for it - it may still be there!
maybe you'll save on the new car,receive less for your trade - or the other way around somewhere else. Good luck.