Walmart has the Hisense 50H8C 50" Class 4K (2160P) Smart LED TV (2016 model, Black) refurbished for $280 with free shipping. Retail price: $500. Features 3840 x 2160p (4K UHD), 60Hz native refresh rate, Multi-zone local dimming, Built-in 2x2 Dual-Band Wi-Fi, Ethernet, Full Array Backlight, 4 x HDMI.
Has good Amazon Reviews.
eBay has the ViewTV Flat Amplified 80-Mile HD Digital TV Antenna (Gold) for $25 with free shipping. Retail price: $70. Receive digital and analog TV broadcast over the air, completely pre-assembled, sleek flat design to go with most decor, included detachable signal amplifier.
Walmart has the Vizio M49-C1 49" Class 4K (2160P) Smart LED TV (Refurb) for $350 with free shipping. Retail price: $770. Features 3840 x 2160 (4K UHD), 120Hz refresh rate (Clear Action 360), Built-in Wi-Fi ( 802.11ac), full-array LED, local dimming, 5 x HDMI, Quad-core GPU + Dual-Core CPU, two-sided remote w/keyboard.