Monoprice is currently having a 20%-off sale on all its 27" and 30" IPS monitors, using coupon BTSPER6 until 8/21/2013.
Using the coupon, you can get a 27" 2560x1440 (DVI-only) monitor for about $325 delivered, and a 30" 2560x1600 (DVI-only) monitor for about $575 delivered. They also have slightly more-expensive options with more connectivity.
I'm not sure if this is the right place to post this, so if not, I apologize. Cheers.