Abt offers the Samsung 40" 4K 2160p LED-Backlit LCD Smart Ultra HD Television, model no. UN40HU6950, for $597.99 with free shipping. (B&H Photo Video, Amazon, TigerDirect, and several other merchants either match this deal or charge a few dollars more.) That's tied with our mention from last week as the lowest total price we've seen for a 40" 4K TV. (It's a current low by $100.) It features a native resolution of 3840x2160 — four times that of 1080p TVs. It also has a 120Hz refresh rate, quad-core CPU, LED backlight, Smart Touch remote, WiFi, Internet Apps (Netflix, Hulu Plus, Amazon Video, more), USB, and four HDMI inputs.