AOC U2879VF 28" 4K 3840x2160 UHD gaming monitor, 1ms response time, 10-bit panel w/ over 1 billion colors, AMD FreeSync, 20M:1 SmartContrast, DisplayPort/HDMI/DVI/VGA inputs - Newegg.com
28" AOC 4 k monitor on sale at $92 off regular price.
Sale price $257.81 plus shipping.
Cheapest one...