eBay is not responsible for returned packages, why would they be? You
admit you had 2lbs too much in the box. Did eBay pack that box for you?
That's the only way I can see they'd be responsible.
Actually it IS an eBay requirement for items $750 and
higherhttps://www.ebay.com/help/policies/selling-policies/seller-protection-policy?id=4345If
a buyer reports that an item hasn't been receivedIf you ship an item
within your stated handling time a...