Anyone have any thoughts on what sort of trade in $ one could or should expect for the 360 Spider F1 with 8806 miles? Some other options include the premium hi-fi system (sub-woofer and 6 CD changer), modular wheels, Silver outside, two tone gray Daytona seats and interior. What happens to the trade in or resale value as I add miles. I know it is going to go down, but are there unspoken thresholds that I need to watch out for? Any comments would be helpful and appreciated.