Dell Home offers the Dell UltraSharp 2001FP 20" LCD Monitor for $431.20 with free shipping.
Apply coupon code "$XX9BNPKP49TM0" to drop it to $371.20. That ties our previous mention, since expired, for the lowest total price we've seen.
The 2001FP features a native resolution of 1600x1200, USB hub, and DVI, VGA, and S-Video inputs. Coupon ends May 3 at 7 am ET or at 8,000 uses.