In case you were hesitant to buy the 27" Catleaps on eBay from Korea Micro Center has come to the rescue and now offers a similar IPS display.
$399.99 + tax, which isn't too much more than the prices on eBay, and you can easily return it if there's anything wrong with it. If it has the same panel as the Korean displays (which is appears to be, but won't know until there's a tear down of it), then it uses the same display as the 27" iMac and Dell U2711 (for half the price).
Pictures of it in this thread at Rage 3D:
178° horizontal / 178° vertical viewing angles (IPS)
Resolution 2560 x 1440
(77% more pixels than 1080p)
Color Support 1.07 billion (10-bit, or 8-bit with FRC)
Warranty 1 year limited warranty