Because human being always want something that others don't really have, for example at one point in time, where button phones came into the country, they were bought at a very high price but the moment android phone came, most of the button phones price reduced drastically, same for the iphone series, once a new series come out the other ones reduce in price, it's quite simple to understand and that is that, demand for the other products reduce, so they have to reduce the price do customers can get there eyes of the hot cake of the season and come to them, but that usually doesn't happen because this operated using the abnormal law of economics or will I say price, which states that the higher the price the more demand you get eg iphone.

This is a tested and proven fact.