Supply and demand affects our every day life. When we look at fashion, if a new style of jeans or top is introduced, and become very popular everyone will want the "in" fashion. With the demand so high, the designer could charge a very high price for the jeans. People are willingly to pay whatever price for what is in, regardless if it will be in next season or not. IT is important to study this and to take a look into things on how to save money. You can buy your clothes for winter during the summer and clothes for the summer during winter and you would save a lot of money.