The seller is not supposed to refund GSP buyers when they receive a damaged item.
You are only liable for delivery to the hub in KY, eBay/Pitney Bowes are liable after that for int'l shipping & delivery.
The overseas buyer should open a return request for receiving damaged item, then eBay/Pitney Bowes take over the case, there should be no refund from you at all, and you don't have anything to do with the other fees - eBay collects those.
You are also protected from negative feedback and eBay should remove that.
You need to speak with eBay rep with the GSP team who understands how all this works and can help you - you also need a refund for whatever you paid that buyer.
Scroll down to the bottom of this >> Help page on Global Shipping
Click on "Contact us"
In the Help Chat box that opens click on "See more"until you see the
option to "Contact an agent" (may have to scroll a bit), click that
OR...type "Agent" in the reply box then hit "Send" to bypass the bots
You should get the options to Chat with agent, or have them call you.
Note: The Call Back option doesn't always work if your carrier blocks spam/telemarketing calls.
With the Chat option eBay will automatically email you a transcript.
