So if you make $20,000 and live in a country with a median income of $40,000 then you should pay higher prices than someone who makes $200,000 and lives in a country with a median income of $10,000? Why?
Also, that's not really how prices work for non-monopolies. If everyone can profitably produce something and sell it for $100 in e.g. South America and then you try to charge $200 in the US or Europe, your competitors are just going to take your customers by charging $100 there too. The ability to engage in price discrimination shenanigans is evidence of an uncompetitive market.