Good Used Cars Dealer (Florence)

Hi All, I would have an intention to fly to around Florence and drive my future car back to Switzerland, if Good Used Cars would be available in advantageous pricing, including importing procedure. An Italian friend of mine living abroad suggested me to try the forum as the cars are becoming fairly affordable in Italy. For further study, could anyone advise me any good dealer? Preferably German cars...:) Any information would be highly appreciated. Thank you!