Still haven't picked up one of Samsung's latest and greatest Galaxy smartphones? There's still time to get one of the phones before Christmas, and here with incentives is Best Buy with, among other things, a $300 discount. The deal offers the Galaxy S8, Galaxy S8+, and Galaxy Note 8 smartphones for $300 off if purchased for either the Verizon or Sprint networks. Not with either of those carriers? There are a few other promotions to choose from.