Walmart offers the RCA 50" 4K Flat LED Ultra HD Television, model no. RLDED5098-UHD, for $229.99 with free shipping. That's tied with our mention from ten days ago as the lowest price we've seen. (It's the best deal now by $109.) It features a 3840x2160 (4K, 2160p) native resolution and four HDMI inputs.