Bidder won first item, and was interested in a second that was listed. He paid for the first item and we waited until he won bid on second item, then decided to combine into one box. How do I adjust the shipping weight on 2 orders combined together with one already paid for?

combined shipping on 2 items purchased a week apart | Ask a Mentor

combined shipping on 2 items purchased a week apart | Ask a Mentor | eBay Community