Profit

Too bad that the depreciation curve on new cars is such that the second it leaves the lot you can lose 10-30% value easily. Then there's tax paid on The $200k, title, registration, and likely insurance. You'll likely need to transport them as well. Assuming the factory warranty is transferable, and you can provide the same buying experience and convenient service of an exotic dealer, that still limits your stock to 3 cars with only the options, colors, and packages you selected, and you can't offer the customization of the dealer. In the high end market convenience, choice, and pedigree trump price. If you could do something like this with mid range economy cars though you could likely make profit.

The 8.75% tax on the $210,000 is more than I have.