Postcrossing maintains a list of international postcard costs by country. Going by cheapest for food, the US is #20, UK is about #100. Bahamas is the cheapest.

Postcrossing maintains a list of international postcard costs by country. Going by cheapest for food, the US is #20, UK is about #100. Bahamas is the cheapest. https://docs.google.com/spreadsheets/d/1leBjOXKNneuPVZt2PRnI5kusD0n36yW9jHuNYY9eF1Q https://docs.google.com/spreadsheets/d/1leBjOXKNneuPVZt2PRnI...