The new city comes with an Alpine CDE-9872 receiver. It supports MP3's and has pretty good sound quality, good enough for me atleast.. Only thing it lacks is Aux-in and USB support. It does not come with a remote, but a aftermarket or OE Alpine remote can be purchased from an audio shop.
Local shops will offer 4500-5000 for the player towards a trade-in.. So i assume they are re-sold for 5500-6000.
For more info: http://www.retrevo.com/search?q=Alpine+CDE-9872&rt=sp&modelid=13483760