NothingButSavings offers the Dell UltraSharp 31.5" 4K IGZO LED-Backlit LCD Monitor, model no. UP3214Q, for $1,197.65 with free shipping. That's $782 under our mention from last spring and the lowest total price we've seen for this model. (It's also a current price low by $63.) It features a 3840x2160 native resolution (four times that of 1080p), IGZO LCD screen, LED backlight, four USB 3.0 ports, and DisplayPort, mini DisplayPort, and HDMI inputs.
Update: Price corrected.