Samsung 28" UHD monitor on sale for $499 and in stock.
I ordered on Friday and got shipping confirmation yesterday. Good deal as out of stock at most places.
Not a lot of reviews, but seems good based on this review: https://youtu.be/rb7qdBplicg
The Samsung UR55 UHD monitor features a 28 inch IPS display with a 3840 x 2160 max resolution, 60 Hz refresh rate, 4 ms response time (GTG),HDR, screen tear free technology with AMD FreeSync and VESA 75mm support. Backed by a 3 year Samsung warranty.
Same price at centrecom