Computer monitors come in a wide variety of type, size and price. Lots of options are available to those who want to buy monitors these days.
There still is the traditional CRT, or Cathode Ray Tube, monitor that is the cheapest computer monitor available.
Right now though, LCD (Liquid Crystal Display) monitors are the new standard for computers, especially for the laptops.
The best monitors on the market today though are the Plasma monitors, but they are much more expensive.
The followings are links to the information pages on monitors by the leaders in the industry