USPS Priority Mail Small, Medium, and Large Flat Rate boxes are all now available when you pay shipping and print labels on PayPal or eBay.
With USPS Priority Mail Flat Rate boxes you can ship up to 70 lbs within the United States, up to 4 lbs internationally using the Flat Rate Envelope and the Small Flat Rate Box, and up to 20 lbs internationally using the Medium or Large Flat Rate Box.
USPS Flat Rate boxes are free and you can order them delivered right to your home or business. Visit prioritymail.com for more information. And when you pay postage and print your labels right from PayPal or eBay, Delivery Confirmation information is automatically uploaded to My eBay and sent in an email to you and your buyer.