Walmart again offers the Sceptre 55" 4K 2160p LED-Backlit LCD Ultra HD Television, model no. U550CV-U, for $399.99 with free shipping. That's $50 off and tied with our mention from a week ago as the lowest total price we've seen for a 55" 4K UHD TV. It features a 3840x2160 (2160p) native resolution, LED backlight, USB, and four HDMI inputs.