BenQ GW2450 24" 1080p LED-Backlit Monitor for $149.99 shipped.  Here is a screenshot for reference.  It features a 1920 x 1080 resolution, 4ms response time, and inputs for DVI and VGA.  Note that this monitor has a VA panel, which is better than the more common and cheaper TN panels.  Most places have it for about $179.