Walmart has the Vizio 60" 4K HDR Flat LED Smart TV (E60-E3) for $428 with free shipping. List price: $748. Features 3840x2160 (4K, 2160p) native resolution, HDR10 support, 802.11ac, Bluetooth, Chromecast (with access to Netflix, Hulu Plus, Amazon, Video, more), 4 HDMI inputs, USB.
Walmart has the 55" TCL 55S421 4K UHD HDR Roku Smart LED HDTV (55S421) for $278 with free shipping. List price: $600. Features 3840x2160 (4K) native resolution, dual-band WiFi & Ethernet, built-in Roku TV (with access to Netflix, YouTube, Hulu, more), 3 HDMI inputs.