Walmart offers the Sceptre 49" 4K 2160p LED-Backlit LCD Ultra HD Television, model no. U505CV-UMC, for $349.99 with free shipping. That's $91 under the lowest total price we could find for a similar Sceptre HDTV with a lesser 60Hz refresh rate. It features a 3840x2160 native resolution (four times that of 1080p TVs), 120Hz refresh rate, LED backlight, USB, and four HDMI inputs.

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Also available is the Sceptre 55" 4K 2160p LED-Backlit LCD Ultra HD Television, model no. U505CV-UMC, for $449.99 with free shipping. That's $250 under the lowest total price we could find for any 55" 4K HDTV with a 120Hz refresh rate. It features the same specs as the above model, but with a bigger screen.