If you're looking for profit margin.. this is the time of the year to do it. All them expensive Christmas packages being shipped. Why that's as good as money in the bank. Lately, I have been using those one fee boxes from the USPS. While a lot of people don't like the USPS, I have had nothing but good luck. Plus I would really hate to see the USPS disappear from small town America. So I am trying to use the United States Postal Service as much as possible...