Amazon.com: HP V28 4K Monitor - Computer Monitor with 28-inch Diagonal Display, 3840 x 2160 at 60 Hz, and 1ms Response Time - AMD Freesync Technology - Dual HDMI and DisplayPort -
Samsung UE590 28" 4K UHD LED LCD Monitor (U28E590D) Grade
Best Buy: HP 28" IPS LED 4K UHD Monitor with HDR (HDMI, DisplayPort) Silver & Black U28 4K HDR
Monoprice 28-inch CrystalPro 4K monitor review: low-priced but hurt by cheap build | AppleInsider
HP V28 4K Monitor - Computer Monitor with 28-inch Diagonal Display, 3840 x 2160 at 60 Hz, and 1ms Response Time - AMD Freesync Technology - Dual HDMI and DisplayPort - Low
Monitor Led IPS 28" Samsung 4ms - 60Hz - 3840 x 2160
28" Nitro KG2 Monitor - KG282K BMIIPX | Acer Store – US