How Much Should I Offer A Guy For A Brand New Never Been Riden 2003 Cannondale R-2000. It Has Caad-7 Optimo Frame. Slice Ultra Carbon Fork. Full Ultegra 9spd With Dura Ace Rear Deral. Mavic Ksyrium Sl Weelset And Continental Grand Prix 3000 Tires. Ttt Forgie Stem And Handlebar, With Cannondale Comp Seat Post And Fizik Pave Saddle Frame Size 52. What Is The Most I Should Spend On It If He Refuses The Offer.