If you just got it from Best Buy, you can at a go back to the store and get a price match. Best Buy lowered the prices on all their previous generation MacBooks, so that will get you at least $200 back depending on which model you got.
Also, if you want to return it, you can within a 14 day window, but you will have to pay the 15% restocking fee. However, the money you get back from the price match will probably cover the fee.