Pamela- You bet postage is less than $7 or $8! In this swap on the 20th of each month, for 12 months, you will get a message from BarbK with the birth dates and names and addresses for the upcoming month. Then, as shown on the picture above, you will prepare a birthday greeting with candies for each birthday celebrant individually. The postage on these will vary from $0.70 cents to $2.55, depending on the weight and size of the envelope. Thicker envelopes are treated as a first class package. Since there are 30+ birthdays, many in the group have perfected the technique to get the thinnest, lightest envelope for mailing.