Newegg offers the LG 34" 1440p IPS LED Flat Monitor for $399.99 with free shipping. That's tied with our October mention (although that included a $50 Newegg gift card) and the second lowest price we've seen. (It's the best today by $69.) It features a 3440x1440 native resolution and DisplayPort, HDMI, and USB inputs.
Looking for a good deal on a set of wheels? This should be your first stop.