Price Discrimination is the situation where a company charges different amounts (in other words has different prices) to different people or under different circumstances. For example, it is considered a price discrimination to have different prices for:
1. People of different age
2. People that buy tickets using cash or with a credit card
3. The air plane tickets that change price based on how early or how late you bought it. They argue that it demands on the demand and the supply but as long as there are tickets available, the supply is higher than the demand and the prices going up is unreasonable.