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Budget
If you are staying with a family, a budget meal would be a simple, traditional, hand-cooked meal. Usually Tortillas, Juice or Soda, a kind of soup with meat, or beef/chicken, rice, and/or black beans.
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Midrange
Mid-range spending would be done at local restaurants or fast food restaurants, which could be considered about the same.
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Top end
This could probably be done at restaurants that cater mostly to tourists, or the rare very high-class restaurants that may be in a city.