Purchasing 5.6 Inch Intelligent HMI Touch Screen with RS232/RS485 +Embedded System+Control Board for Industrial Use online, there are many advantages, but also a few cons. Here are some tips to help you take advantage of shopping online the next time you need an merchandise item. One of the main reasons that people buy goods online is to be in a position to compare prices more easily, without needing to visit many stores that may be miles apart. Online, you can compare prices on anything all in the same browser. Something that can make your price comparison looking easier is to use price comparison search engines. There are sites like PriceGrabber and Nextag that display a product and show you the prices and even the shipping costs to your location for as many as dozens or hundreds of varied stores. These sites can be a real time and money saver!