All you need to do is log in on your desktop or laptop on ebay, go to “SELL” and click the button to print a shipping label for the item in question. Once you`ve got there, look under the “BUY PORTO” button. I need to sign the billing agreement so that I can send from home The usps billing agreement PayPal should be displayed on the first attempt to print the label. It authorizes PayPal to deduct the shipping payment and transfer it to USPS. I just received an email from PayPal that says I have a billing agreement in place to automatically pay my eBay seller fees and any refunds made in accordance with the eBay Buyer Protection Policy. I don`t know I did that. .