People believe that price is the most significant indicator that should be taken into account when buying a certain good. I partially disagree with this, because there is often a low correlation between the price of the good and its quality. Moreover, people's decision-making might be constructed on their own preferences and habits, so in this case, it is better to ignore the price and look for the most convenient option instead. However, the cost of a particular service, for instance, medical treatment really matters a lot, since most frequently it is strongly correlated with the characteristics of the service.