This part gripes me when they travel to “less fortunate” or “poor” countries where eating out is $0.50-2.00 but the same or similar thing is $30-500 in the US, however: people earn different levels of income. Like in that “third world” country, people may only live with $10 a day while Americans live with either $7.25 / $15 per hour in minimum wage, so it’s not comparable as to why the prices are seen as “cheap” by Americans.
Now, put it this way: if an average joe were to earn the FEDERAL mandated minimum wage of $7.25, is buying a whole weeks worth of groceries affordable with that alone (excluding rent, utilities, insurance, etc)? Do you consider a $200 semi-fancy dinner at a restaurant (not over the top luxurious, but formal & fine dining) with family or friends “cheap” in the US whilst earning $15 (or even $30) per hour in minimum wage?
Not mentioned by others is the cost of inputs going into a meal between countries. For various reasons, Vietnamese street vendor food is going to cheaper than an American fast casual meal.
When you look at the Big Mac Index, you’ll find that the variance in cost to a single burger served in an air-conditioned building across different countries isn’t as much as you’d think.