Which one do you have? The ones I've been seeing are all $350+
Anandtech and others have tested some of these korean 1440p IPS monitors and their specs fall short of their more expensive big brand cousins and their cheaper 1080p cousins. That includes contrast ratio, response times, gamma uniformity, etc. These may be the same panels but they're not the same grade. Big name brands only use A+ grade panels that meet their rigorous quality control standards. While these cheap korean monitors use the A- grade panels that were rejected. The lower grade panels have poorer specs and a higher chance of developing defects like stuck/dead pixels. Combine that with no warranty and you have a pretty risky purchase. You're right that they have less input lag but that's easily compensated for as their other specs are far worse than competitors. And to get the price down they also use poor quality stands/frames, have limited input options, no usb/audio hubs, no OSD or options, etc. None of that stuff necessarily bothers me but for some it can be a deal breaker. I don't think spending an extra $100-200 (effectively doubling the price) and dealing with all these limitations is worth it just to get double the resolution. The good ones cost a fortune and the not so good ones still cost a lot more.
Anandtech and others have tested some of these korean 1440p IPS monitors and their specs fall short of their more expensive big brand cousins and their cheaper 1080p cousins. That includes contrast ratio, response times, gamma uniformity, etc. These may be the same panels but they're not the same grade. Big name brands only use A+ grade panels that meet their rigorous quality control standards. While these cheap korean monitors use the A- grade panels that were rejected. The lower grade panels have poorer specs and a higher chance of developing defects like stuck/dead pixels. Combine that with no warranty and you have a pretty risky purchase. You're right that they have less input lag but that's easily compensated for as their other specs are far worse than competitors. And to get the price down they also use poor quality stands/frames, have limited input options, no usb/audio hubs, no OSD or options, etc. None of that stuff necessarily bothers me but for some it can be a deal breaker. I don't think spending an extra $100-200 (effectively doubling the price) and dealing with all these limitations is worth it just to get double the resolution. The good ones cost a fortune and the not so good ones still cost a lot more.
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-Ron Swanson
"I shall be a good politician, even if it kills me. Or if it kills anyone else for that matter. "
-Mark Antony