The New Years Game reminded me-
If you ship via USPS, I highly recommend PirateShip.com. I ave on almost every one of my labels over in person, online, and even eBay rates. It is a buck here, and a buck there, but it adds up, especially since USPS rates will be going up after the first of the year. You can check it out yourself any time you are going mail something, and even import your eBay info and then export tracking back to eBay, as well.
As an example, here is what I paid for my Large Flat Rate Box I just sent out today-
