Comics-scifi_collectibles Is a Volunteer Community Mentor.
@nickernick You can print an address label. However not sure why you'd want to as postage costs more at the post office.
You will need to use a computer.
Go to this page> https://www.ebay.com/sh/ord/?filter=status:ALL_ORDERS
Put a checkmark next to the item.
Select Print Packing Slip and More from the Shipping Drop down menu at the top of the list.
Next screen uncheck anything you don't want to print and check Address Label.
You may want to use eBay Standard Envelope for your cards that are under $20 so you have some tracking and insurance. https://www.ebay.com/sellercenter/shipping/choosing-a-carrier-and-service/ebay-standard-envelope
A fellow Mentor explains how the eBay Standard Envelope has to be packaged here>
https://community.ebay.com/t5/Ask-a-Mentor/Standard-envelope-shipping/m-p/34239169#M598479
