It looks like the Marlins will be asking for the world for D-Train, and the way it's shaping up, the Yanks & Mets will be in a bidding war. You have to imagine they will want a pitching prospect in the deal - but how much more will it take?
They will likely start the bidding at:
Mets: Milledge and Pelfry
Yanks: Hughes & Duncan & Cabrera (don't laugh) or other prospect