Newegg offers the refurbished HP Pavilion 22bw 21.5" 1080p IPS LED-Backlit LCD Monitor for $99.99. Coupon code "EMCENFK37" drops it to $74.99. With free shipping, that's $25 under the best deal we could find for a similar new HP 21.5" model. Features include a 1920x1080 (1080p) resolution, LED backlight, and HDMI, DVI, and VGA inputs.
Note: A 1-year warranty is included, although it's unclear who backs it.