Ah, Black Friday. The biggest (and most malevolent) shopping day of the year. A day of good deals, hateful people, and... other stuff. If you're willing to brave the all that for a new phone, Sam's Club has you covered this year, with the Galaxy S III going for less than a buck with a new two-year agreement.
From what we gathered by calling a few different Sam's stores, this is good for all four carriers (so long as your local Sam's has them all).