Walmart offers the Samsung 55" 4K HDR Flat LED Ultra HD Smart Television, model no. UN55NU6900, for $477.99 with free shipping. That's the lowest price we could find by $40, outside of the mention below. Features include:
3840x2160 (2160p) native resolution
Smart TV apps
2 HDMI inputs
A close price: Best Buy charges $479.99 with free shipping.
There are many ways to get cheap and even free services and goods after reaching a certain age.