Walmart offers the Samsung 50" 4K HDR Flat LED Ultra HD Smart Television, model no. UN50NU6900BXZA, for $327.99 with free shipping. (Most retailers are charging a close price within $2 more, including B&H Photo Video, Costco, and Best Buy.) That's $122 off and the lowest price we've seen for a new Samsung 50" 4K TV. It features:
3840x2160 (2160p) native resolution
Smart TV apps (YouTube, Netflix, Hulu, etc.)
2 HDMI inputs
With these companies, it might be easier than you think to negotiate your monthly bill down.