As one of its daily deals, Best Buy offers the Dynex 50" 1080p LED-Backlit LCD HD Television, model no. DX-50D510NA15, for $329.99 with free shipping. That's $70 off list and a very low price for a 50" HDTV. It features a 1920x1080 (1080p) native resolution, USB, and two HDMI inputs. Deal ends today.
Of note, Best Buy lists this as a 720p TV, but Dynex's own specifications have it at 1080p.