B&H Photo Video offers the HP W2072a 20" LED-Backlit LCD Monitor, model no. A3M50AA#ABA, for $66 with free shipping. That's the lowest total price we could find by $34 and the least expensive HP 20" LED LCD display we've seen. Features include a 1600x900 native resolution, LED backlight, 600:1 native contrast ratio, 200 cd/m² brightness, 5ms response time, DVI-D and VGA inputs, and more.

Note that it's currently out of stock, with an estimated ship time of 7 to 14 days.