You print a small flat rate box on line either at USPS/eBay/or another provider and you pay $5.15. Of course you can get these boxes from the post office or order them free on line. The zone A boxes which save me a lot of money in shipping are not available at my local post office and only available free on line. I still would like to know if the free insurance is good for the Zone boxes. The answer I received 2 days ago wasn't that positive sounding. To give you an idea of savings I sent 10 pounds of playing cards from Wisconsin to Ohio for $5.44 USPS PRIORITY and it went I hope with free $50 worth of insurance. The Zone A box is just a pinch smaller than the Medium Flat Rate and postage varies by Zone hence the name. Medium Flat rate would have cost me double the postage. I may even make a profit this year saving so much money.