Question: how many stamps to mail a letter to philippines?
Answer: Don't buy too many stamps at once, only as many as you will use in six months or so. Postal rates tend to go up every few years. You can use old stamps, but you have to get stamps to make up the difference in rate. Luke if the rate goes up to $1.18, you can use your $1.15 stamps, but you have to add a 3¢ stamp, too.