it's actually up to you, by how you define "a decent meal"; but for a regular filipino whom need to save money to be able to send home the rest of his earning, you need to carefully budget your allowance, lets say in a week,.. buying per week would save you a lot, rather than per day, that is if you are cooking, which is the most reasonable way to have a big savings rather than dining - out. If you don't know how to cook, buy a recipe book, and start your remaining days in the philippines in learning,... good luck and GOD bless!