On both of my total losses (a fire, and a theft) they took the high and low of all the cars on sale in my state and offered the average. One of the companies would not negotiate on the settlement at all, one upped their original offer $800 after I politely but very persistently bugged the hell out of them for 2 weeks. But it all depends on the company.
I would ask them to explain how they arrived at the figure they gave you and make sure they were comparing other GT Premiums and not just all GTs, comparably equipped, and with comparable mileage. And with your car being so new, I would double check to make sure they were comping 2013s.
Scott | 2012 GT Premium Coupe • Performance White • 6R80 • HID • 64M Wheels • Ford All-Weather Pony Mats & Trunk Liner • GT500/GT Rear Mud Flap Set • Ohio's Horses License Plate • Raxiom Aero Tails
If you love your dog, get a microchip, they really work! My lost dog was back home in just under 24 hours thanks to the good citizens who called the county and the microchip that told animal control exactly where he lived.