Buy.com offers the ViewSonic 23.6” 120Hz 1080p 3D-Ready Widescreen LED-Backlit LCD HD Monitor, model no. V3D245, for $479.99. (OfficeMax charges the same.) With free shipping, that’s the lowest total price we could find by $40. This monitor features a 1920×1080 (1080p) native resolution, 120Hz refresh rate, LED backlight, 20,000,000:1 dynamic contrast ratio, 2ms response time, stereo speakers, one pair of NVIDIA 3D Vision glasses, one HDMI input, and DVI and VGA inputs.

Note: For 3D, you’ll need a compatible NVIDIA video card (not included).