Its free to order one. Make sure you don't pay anything to order one. I mean, the way they are selling GT's still, its not like when its actually built and shows up at the dealership and you don't want it, nobody else will. Its not like a car they have a million of, and its still a really hot product so if the dealer can't sell it to you, they'll sell it to someone else.
I ordered mine with all the options I wanted back in mid-july and got the car this week. Never paid a deposit or anything.