I used to be an adjuster and have told more than one person who's brand new car was totalled that it was not a new car; as soon as the car was driven off the lot, it was a used car.
Apply that to the '10 C14. As soon as you drive it onto the street, it becomes a two year old used bike. In another couple of months, it will become a three year old used bike.
Now, that might not sound like a big deal, but hypothetically, if you were get in an accident a week after buying it for $13,000, wouldn't you be upset if you found you could only get $10,000 back?
Still, motorcycle leftovers can be fun (I bought a new in the crate '85 Suzuki Madura v4 1200 back in '89), just nibble at the price. You have the $ and the dealer has a dust magnet that no one wants- advantage in your court. Get some prices off of valuation sites of what a '10 C14 with 500 miles goes for and use that as your final price.
Also, don't be afraid to travel if you see a good price. I flew out to CO to get my C14, rode it home 1200 miles away. I can't think of better time or excuse to go for a long ride than now.