A:Answer The customized models you will have to order directly from Apple, or go to an Apple store. BestBuy carries a stock of the 4 basic models. I will caution you however, at the point you are upgrading to the core i7 model, you should really consider the 16" MBP as it has a better thermal design to handle a more powerful processor, as well as dedicated graphics. at around the same price as you would be paying for the i7 model in the 13" form factor.