Dell Small Business offers its Dell UltraSharp U2413 24" LED-Backlit LCD Monitor, model no. 469-4030, for $509.99. Coupon codes "9QB025WNJ3X$MJ" and "$$L1F?NTDP934R" drop it to $422.99. With free shipping, that's the lowest total price we could find by $37. (For further comparison, we saw it four weeks ago bundled with a $100 Dell gift card for $77 more.) It features a 1920x1200 native resolution; LED backlight; USB 3.0; and DisplayPort, HDMI, and DVI-D inputs. Deal ends October 31.