Not all monitors are created equal.
I am surprised by how low the quality and specs of some retail/consumer monitors have become. This is the part of your PC you look at all day. The best computer money can buy will look like crud when connected to a cheap 'big box' monitor. The refresh rates and contrast ratios of some monitors being sold today are embarrassing.
Forget about our low price for a minute and look at these specs. I've bolded the more important numbers. Compare these to monitors being sold in Best Buy or other retail stores.
Inputs: VGA, DVI-D, 2x USB 2.0 Ports
Adjustments: Height, pivot (rotation), swivel, tilt
Aspect Ratio: 16:9
Contrast Ratio 1000:1 / 2000000:1 (dynamic)
Resolution: 1920 x 1080 at 60 Hz
Color Support: 16.7 million colors
Horizontal Viewing Angle: 178
Vertical Viewing Angle: 178
Pixel Pitch: 0.27 mm
Manufacturer Dell, Inc.