ANTOnline offers the HP ProDisplay P201m 20" LED-Backlit LCD Monitor, model no. C9F73AA#ABA, for $89.49 with free shipping. (Directron via Amazon charges the same after shipping.) That's $10 below our December mention and the lowest total price we've seen. (It's a current best by $14.) Features include a 1600x900 native resolution, LED backlight, built-in speakers, and DVI and VGA inputs.
Note that it has no HDMI input.