eBay with BuyDig has the LG UltraFine 27US550-W 4K Ultra HD 60Hz 27" IPS Monitor (27US550-W) for $200 - 20% off with coupon code CYBERWEEK20 [Exp 12/1] = $160 with free shipping.

• 3840x2160 resolution, 60Hz refresh rate, 5 ms resposne time
• 300 nits brightness, 2x HDMI, DisplayPort 1.4, 1000:1 contrast ratio