New price low! YMMV coupon. Amazon has the Acer Nitro XV325QK 3840x2160 4K UHD 160Hz MiniLED IPS 31.5" Gaming Monitor (XV325QK V3bmiipprx) for $450 - $135 off coupon (click checkbox) = $315 with free shipping.

• 3840x2160 resolution, 160Hz refresh rate, 0.5ms response time
• 2x HDMI, 2x DisplayPort 1.4, AMD FreeSync Premium