As one of its daily deals, Groupon offers the Polaroid 55" 2160p 4K LED LCD HD Television, model no. DE550M3N4AU, for $499.99 woith free shipping. That's $100 under our December mention and the lowest total price we've seen. (It's a current price low by $152.) Features include a 3840x2160 native resolution, LED backlight, four HDMI inputs, USB, and PC input. Deal ends today.