Price discrimination is a subject covered in introductory level microeconomics courses: https://en.wikipedia.org/wiki/Price_discrimination https://en.wikipedia

Price discrimination is a subject covered in introductory level microeconomics courses: https://en.wikipedia.org/wiki/Price_discrimination https://en.wikipedia.org/wiki/Price_discrimination Bottom line is collect more money from those able and willing to pay you more, and collect less from those less able and willing to pay you, as long as it is above the cost of goods sold. At some national parks or attractions in poorer countries, they will ask to see your passport and collect more money if you are from a richer country.