Amazon offers the TCL 48" 120Hz 1080p WiFi LED-Backlit LCD Roku Smart HD Television, model no. 48FS4610R, for $397.99 with free shipping. (Costco charges the same for its members.) That's tied with our mention from two weeks ago as the first TV we've seen with integrated Roku streaming and the lowest total price we've seen for any new 48" 1080p Smart TV. (It's also a current low for this model by $51.) Features include a 1920x1080 (1080p) native resolution, 120Hz refresh rate, WiFi, Roku-integrated Smart TV apps (Hulu Plus, Netflix, YouTube, more), Roku Remote, USB, and three HDMI inputs.
Of note: This item is listed as temporarily out of stock at Amazon, but can be ordered at this price for delivery when available.