For its members only, Costco offers the TCL 55" 4K LED-Backlit LCD Ultra HD Roku Smart Television, model no. 55C803, for $449.99 with free shipping. That's the lowest price we could find by $130. It features a 3840x2160 (4K, 2160p) native resolution, 120Hz refresh rate, 802.11ac wireless, built-in Roku TV (with access to Netflix, Youtube, Hulu Plus, more), USB, and three HDMI inputs. Deal ends November 16.