I really would have loved to have a 2560x1600 monitor 'cause I do gfx desing and 3d... but they are too costly
. The lowest price I saw was $1200 , that's just ridiculous imo.
These monitors generally use H-IPS panels which are rather expensive to manufacture. I think some use S-PVA panels, but they are still much more expensive to manufacture than TN panels.
Addtionally, because of the high resolution, there are many pixels that are on the screen which uses more materials to produce.
Lastly, LCD panels are manufactured in large panes of "glass". The larger the LCD panel size, the few panels can be cut from the "glass". Additionally, defective areas must be cut around, therefore decreasing the number of LCD panels cut from the glass. The fewer the panels cut from the pane of "glass" the higher the cost per unit because there is a fixed involved to manufacture the pane of "glass".
Do you get the picture?