The Cost of Food and Drink in Thailand. In one full month in Thailand, I spent THB7,392 on food, or about $204. This works out to a daily average of $6.50, or $2.20 per meal! Many people in western countries will spend $50 on food per day from eating out; on average, I spent $46 per week! This number does not reflect the price of alcohol, except for the occasional beer with dinner.