Best Buy offers the LG 29" 21:9 UltraWide IPS Antiglare LED-Backlit LCD Monitor, model no. 29UM55, for $299.99 with free shipping. That's $100 off list and the lowest total price we could find. It features a native resolution of 2560x1080 (1080p), split-screen mode, 5ms response time, 1,000:1 contrast ratio, DisplayPort, DVI-D, and two HDMI inputs.
Need it by Christmas? Order via pickup by December 24 at 4 pm local time. (Stores close at 6 pm.)