Well water is definitely not water and let me tell you the reason why, in actual sense water is better than others because of the process of purification, the treatment it goes through in several bottling water companies are very different and the individual purification process are more costlier than the other.

Another thing is the packaging of the company, for example, the kinds of people that purchase let's say a particular kind of bottle water may be very rich individuals and as a result of this the company may increase the price of their bottle water because of their rich consumer, while others may not be so expensive because they're fighting to establish their brand.

Name is another thing. If a bottling company has a more recognized name than other bottling companies selling the same composite water produce, this will definitely make the price differ