Groupon offers the refurbished Vizio SmartCast E-Series 4K 2160p LED-Backlit LCD Ultra HD Smart Television in various sizes from $399.99 with free shipping. Each features a native resolution of 3840x2160 (2160p), WiFi, USB, and four HDMI ports. Deal ends November 30. The TVs, with comparisons to new units: A 90-day Sohnen warranty applies.