Walmart offers the refurbished Sharp 55" 4K Flat LED HDR Smart Television for $249.99. It falls to $247.47 when you choose in-store pickup. That's the lowest price we could find by $42 and the cheapest Sharp 55" 4K Smart TV we've seen. Features:

3840x2160 resolution

801.11ac wireless

Smart apps

USB, 3 HDMI inputs

Note: A 90-day Walmart warranty applies.