Woot offers the refurbished Vizio 55" Ultra 4K 2160p WiFi LED-Backlit LCD Smart HD Television, model no. P552UI-B2, for $849.99 plus $5 for shipping. That's tied with our mention from three weeks ago as the lowest total price we've seen. (It's $145 below the current low for a new model.) It features a 3840x2160 resolution — four times that of 1080p TVs. It also has a 240Hz refresh rate, 64 active LED zones, WiFi, Smart TV (with access to Netflix, Hulu Plus, Pandora, and other Vizio Internet apps), USB, five HDMI 2.0 ports, and includes a 2-sided remote with backlit QWERTY keyboard. Deal ends March 28.

A 90-way Woot warranty applies.