I can't answer all your questions but re the ebay fees. I don't think you will be refunded those as there was a sale and it will be considered your fault that the watch was damaged, not ebay's.

Had the buyer not paid, for example, that would be different. You could claim for fees back then.

I am not actually sure the watch was or is damaged. It's an expensive item, sent overseas by a seller with zero feedback. To some buyers, that might signal 'opportunity to scam'.

But the buyer will win that one, so your best bet, as far as I can see, would be to let them open a claim and then you will be responsible for the postage fees back. The whole process is a bit more complicated & expensive with sales outside Australia, unfortunately. Had you asked earlier, I think a lot of people might have advised selling to Australia only.

The normal procedure would be that the buyer gets the refund once the item tracking shows it has been returned to the seller, but you have an added complication in that your return address is wrong.

You really need to get onto ebay help asap. Try to get someone to give you a call back.

Good luck. I am really hoping you won't lose both the money and the watch.

PS I realise that says solution for buyer but get onto the contact us section any way you can and request a call back so you can explain your problem.