This monitor is really only "worth" $500, it should've never been $700-800 to begin with, and it was never meant to be..
So if this monitor is only worth $500 then that must mean that there are comparable monitors on the market that are in fact ~$500 with the exact, or similar, specs (27", 2560x1440, LED backlit, IPS (of whatever flavor), 79% Adobe RGB, reputable brand, warranty, A panel (or is it A+?), multiple inputs, OSD, USB 3.0 hub, decent stand, 100mm VESA, etc).
Is there such a monitor for less than $550? For that price I think Korean off ebay, or monoprice but then when those are mentioned you say they lack half of the list I wrote above (which they do).
I'm curious, what monitor(s) are on your wish list and do you own them?