This monitor has been lower in the past but this price is not bad at the moment.
It's the newer model of the one posted for $405 on amazon and there is also some cashback from certain sites for Newegg. In addition, since this is the business model the warranty will be for 3 years and can be extended depending on which credit card you use.
3840 x 2160 Ultra HD 4K Resolution
HDMI, DisplayPort USB Type-C Inputs
Radeon FreeSync Technology
Tilt, Pivot, Height Adjustable