Best Buy offers the Dynex 50" 1080p LED-Backlit LCD HD Television, model no. DX-50D510NA15, for $279.99 with free shipping. That's $50 below our mention from three weeks ago, $120 off list, and the lowest total price we've seen. (It's also a very low price for a 50" HDTV.) It features a 1920x1080 (1080p) native resolution, USB, and two HDMI inputs.
Of note, Best Buy lists this as a 720p TV, but Dynex's own specifications have it at 1080p.