You need a sample of circa 50 or less cars to be even able to think you could do this.
I considered a Sagaris a year or so ago when they were £35k, but now they are over £50k, but only because the market is tiny.
If this site was the only place to buy a 350z then you could do it, but it's not. Its a mass produced car.......therefore there are hundreds for sale at any given time.