Best Buy offers the Hisense 50" 4K 2160p WiFi LED-Backlit LCD Ultra HD Smart Television, model no. 50H8C, for $499.99 with free shipping. That's the lowest total price we could find by $109 and within $2 of the best outright price we've seen for any new 50" 4K Smart TV. It features a 3840x2160 (2160p) native resolution, Smart TV apps (including Hulu Plus, Netflix, and YouTube), three USB 3.0 ports, and three HDMI inputs.
Of note, as we mentioned earlier today, Walmart offers a Panasonic 50" 4K Smart TV for the same price.