Walmart offers the Samsung 57.5" 4K LED-Backlit LCD Ultra HD Smart Television, model no. UN58MU6070FXZA, for $548 with free shipping. That's $50 under our mention from two days ago, $251 off list, and the lowest price we've seen. It features a 3840x2160 (4K, 2160p) native resolution, 4K upscaling, 802.11ac wireless, Smart Hub (with access to Netflix, YouTube, Hulu Plus, more), Bluetooth, USB, and two HDMI inputs.