Newegg offers the refurbished HP Pavilion 23tm 23" 1080p Touchscreen LED-Backlit LCD Monitor, model no. E1L11AA#ABA, for $159 with free shipping. That's $5 below our refurb mention from three weeks ago and $111 below the lowest total price we could find for a new unit. (It's also one of the least expensive touchscreen displays we've seen with these specs.) It features a native resolution of 1920x1080 (1080p), 5-point multi-touch LED-backlit LCD, speakers, USB, HDMI, and DVI-D.
Note: A 90-day warranty applies, although it's not clear who backs it.