Dell Home, via its Member Purchase Program, offers its Dell U2917W UltraSharp 29" 2560x1080 IPS Ultrawide LED-Backlit LCD Monitor, model no. HKCH2, for $356.24 with free shipping. That's the lowest total price we could find by $32. It features a 2560x1080 native resolution, LED backlighting, USB 3.0, DisplayPort, mini Displayport, and HDMI.
Note: Dell's MPP is available to select groups, including students, government employees, military (active and retired), credit union members, and health care workers.