4K displays are slowly trickling out, and slowly trickling down in price. The problem with the resolution, though, is that not only are the displays very expensive, but there isn't really any native 4K media. Some games and videos look fine when upscaled to 4K, but that's not true 4K. Though the resolution is still too young to even have native media, one man decided 4K was a thing of the past, and built a 12K gaming PC.