Walmart offers the refurbished TCL 54.6" 4K 2160p LED-Backlit LCD Ultra HD Roku Smart Television, model no. 55US57, for $319.99. Opt for in-store pickup to avoid the $49.97 shipping fee. That's $79 under the price of a new one and a good deal for a 55" 4K Roku TV, although we saw it for $11 less last December.