DBRoth via eBay offers the Samsung 40" 4K 2160p LED-Backlit LCD Smart Ultra HD Television, model no. UN40HU7000, for the in-cart price of $549.99 with free shipping. That's $50 under our expired mention from three days ago and the lowest total price we've seen for this model. (It's also a current low by $50.) It features a native resolution of 3840x2160 — four times that of 1080p TVs, LED backlight, WiFi, USB, and four HDMI inputs.