Green-Sum via eBay offers the Wasabi-Mango 27" S-IPS LCD Monitor, model no. QHD275, for $259 with free shipping. That's $10 under our mention from last month, the lowest total price we could find by $41, and a very low price for any 2560x1440 LCD. It features a 2560x1440 native resolution, speakers, two HDMI inputs, and dual-link DVI and VGA inputs.
Note that it's not compatible with Mac computers.