LG 24UD58-B 24-Inch 4K UHD IPS Monitor with FreeSync for $249.99 shipped. Here is a screenshot for reference. It features a 4K UHD resolution at 3840 x 2160, Freesync, on-screen control with Screen Split 2.0, inputs for HDMI 2.0 and DisplayPoart. Most places have it for about $349.
This deal has expired as the price has been raised. Congratulations to those able to get in on it.