Acer.com has the 21.5″ Aopen 22CX1Q Bi 1080p LCD Monitor for $74.99 – $15 with promo code PRES20 = $59.99. Shipping is free.

• Resolution: 1920×1080, VESA Mount: 75×75
• Panel Type: TN, Response Time: 5ms
• Refresh Rate: 60Hz, Contrast Ratio: 100 million:1
• Inputs:, HDMI, VGA