Staples offers the Dell UltraSharp 34" Curved IPS LED-Backlit LCD Monitor, model no. U3415W, for $599.99 with free shipping. (Amazon charges the same.) That's tied with our expired mention from three days ago as the lowest total price we've seen. (It's the best deal now by $200.) Features include a 3440x1440 (1440p) native resolution, USB 3.0, and DisplayPort, MHL, and HDMI. Deal ends February 25.

Update: The Staples item is out of stock; however, the Amazon offer is still available for $599.99 with free shipping.