If you want to quickly and easily calculate the pixels per inch of a display, here’s a useful tool:
Monoprice dropped a bomb at CES this week: a 27″ IPS LED monitor with WQHD 2560×1440 resolution for $390.
From what I understand, there are several Korean manufacturers who make monitors from surplus or rejected panels intended for Apple displays, then sell them for under $400.
This looks like Monoprice signed on to distribute them in the United States, which seems less risky than buying them from a small importer or exporter off Amazon or Ebay. These monitors are popular with enthusiasts, but I imagine with Monoprice distributing them, the following will only increase. Monoprice is a bit of a secret too, but I heard of Monoprice long before I heard of Korean-made WQHD monitors.
Monoprice estimates they’ll be shipping them by March.