[kurthr]

I assume you're looking for an LCD monitor... not OLED or something novel. I'm not sure why you would want 120Hz, that seems like the only challenge to a competative price. Most LCD materials have long response times (>5ms) so they tend to blur at high refresh rates. High refresh rates at high resolution are also a challenge and thus higher cost. If you're looking for 4k, it's also worth noting that most non-premium TVs will use 2subpixel (RGBG rather than RGBRGB) rendering for higher brightness ans lower cost whereas most monitors will use 3. There are also economies of scale to much larger glass >40" which aren't usually seen in monitors. I am surprised how relatively poor the color matching on many monitors is, however.