Walmart offers the RCA 54.6" 4K LED-Backlit LCD Ultra HD Television, model no. RTU5540, for $339.99 with free shipping. That's $360 off and the lowest price we could find, although we saw it for $10 less last week. (It's still a strong deal for a 55" 4K TV.) It features a 3840x2160 (2160p) native resolution, LED backlight, and four HDMI inputs.