It would have me heading for the showroom exit if I went but ,they always seem overpriced to me any way. I do understand though that you have the option of an up font payment for each of these things so, what you get is a basic car with all the extra,s but none work unless you pay for them. A novel approach but possibly it makes the building more straightforward as all cars are the same except for the colour which will simplify things although many cars will be fitted with things never used or wanted which is not good.
I do wonder if this will produce a black market, with engineers finding ways to activate the extras.