Adorama via eBay offers the Acer B276HK 27" 4K UHD IPS LED-Backlit LCD Monitor, model no. UM.HB6AA.003, for $399.99 with free shipping. That's $40 under our mention from three weeks ago and the lowest total price we could find by $77. It features a 3840x2160 (2160p) native resolution (four times that of 1080p monitors), LED backlight, built-in speakers, and HDMI, DVI, and DisplayPort inputs.