Walmart offers the Hitachi 49" 1080p Flat LED Roku Smart Television for $229.99 with free shipping. That's $20 under our March mention and the lowest price we've seen. (It's the best deal now by $323.) It features a 1920x1080 (1080p) native resolution, built-in Roku OS, and three HDMI inputs.
Uncle Sam could take a hefty chunk of your retirement income if you botch this.