Food prices vary by country. Compared to India Pakistan Nepal and Afghanistan the people of Bangladesh can buy food at a relatively low price relative to their income. The quality of food that can be eaten in our country at a low price, to buy that quality food in the developed countries has to spend a lot of money. As a citizen of New York one dish of ordinary food has to be spent a lot of money. The price of food depends on the quality of the country's economy.
Essentially, the government always considers the wages of its citizens versus the cost of living they face. In the US, it is true that food may seem expensive (form our POV), and that's because the average worker's salary in America is relatively high. Many immigrants aspire to work in the US due to the significantly higher wages compared to other countries.
This advantage appears fair in terms of purchasing food, but it may not be fair for international product purchases. For example, people in the US can easily afford an iPhone (as international product) because they have higher wages and more savings than people in countries with lower average incomes. International products seem very affordable in large, prosperous nations, while they appear expensive in poorer countries.
In economically challenged nations, social inequality is starkly apparent. Even extremely wealthy individuals will continue to be rich indefinitely, while the poor will remain poor due to limited opportunities for development... rich man always control the economic. Food prices, when viewed from the perspective of each individual citizens, may appear the same (for local products), but when viewed from the perspective of one citizen, the perception can vary widely.