As one of its daily deals, Woot offers the factory-refurbished Samsung 28" 4K Ultra 2160p LED-Backlit LCD Monitor, model no. U28D590D, for $369.99 plus $5 for shipping. That's $105 under the lowest total price we could find for a new unit, although we saw a refurb for $45 less in December. It features a 3840x2160 native resolution (four times that of 1080p), LED backlight, two HDMI ports, and DisplayPort. A 90-day Samsung warranty applies. Deal ends today.