While there may not be a lot of differences between classes of monitors at first glance, there are several reasons to go with a business class monitor opposed to an inexpensive, open box deal at your closest retailer.
While most consumer-grade monitors may seem like a great deal, the chances are that you will experience problems months, or even years, down the road. The main problem with consumer-grade monitors is that they are only intended to be on around 2-5 hours a day, opposed to a business-grade monitor, which is built to be on 16-24 hours a day. Commercial-grade displays from leading manufacturers such as NEC, Samsung, or LG are designed to dissipate heat and use higher-grade components to act more reliably during the more intense usage. As that consumer-grade display continues to run, it gets hotter and hotter, thus increasing the likelihood of failure.
Furthermore, the vast majority of current monitors on the market come with sub-par accessories. Most of the newer business class monitors come with adjustable height stands that can also swivel so you can adjust your monitors; however, you would like them. Also, if you have limited desk space for monitors or if you want to turn one on its side to use the portrait based monitor viewing, business class monitors can be adjusted to ensure that your desk is customized to meet your needs.
Business-class monitors also come with more ports on the back of the monitor, allowing you to connect as many as six separate devices to your monitor. They also come with higher resolution ports, such as HDMI and display ports, allowing you to have higher resolutions and better graphics on your monitor.
On top of that, when, not if you run into a problem with your consumer-grade monitor, your warranty is most likely up. While most manufacturers have a 90-day warranty on their products, the fine print most likely reads that if you bring your consumer-grade monitor into a business setting, then your warranty becomes void with the company. Business-class monitors typically come with a 1to3 year warranty. The last thing you want to do is set up your whole office with monitors and have them all fail. Prevent the problem and consider a business class monitor instead.