Right, and a Phone could spend $50 to build that screen on a $700 device (not that they do). Just a raw 75 * $50 is near $4000, which would explain a high price.
That is if it is the pixels per unit that lead to cost, vs the size of the display itself.
Obviously it is harder to make a 1 inch x 1 inch display with 1 million pixels vs 1000. But maybe the difference from 600ppi to 200ppi is not enough to matter...
