I went into a Best Buy store, got to handle a white Note 4, then pre-ordered a black one. I paid $50 to pre-order. The sales guy told me that when the phone comes in, they'll call or email me to pick it up, at which time: (a) I trade in my old phone; (b) the Best Buy $200 trade-in gift card will be applied to the purchase. He said he was absolutely certain that it would be applied to the purchase, as opposed to them charging me the full price for the phone and giving me a $200 gift card to use for other purchases.