Costco offers its members the Vizio 50" 4K 240Hz LED LCD Smart Ultra HD Television, model no. P502ui-B1, for $699.99. (Non-members pay an additional $41.50.) With free shipping, that's the $130 below list and lowest total price we could find. It features a 3840x2160 resolution, 240Hz refresh rate, 802.11ac WiFi, content streaming (Netflix, Youtube, Pandora, more), ambient light sensor, 2-sided remote with QWERTY keyboard, USB, and five HDMI inputs. Deal ends March 29.