Usps insurance claim/ ebay return question.

[Brucepug]

I know this is a bit off topic for a baseball card group but since there is no doubt expensive ebay and usps experience, I hope some one can give me some advice
I sold a WORKING alienware laptop on ebay last week. I shipped it and insured it for full cost priority shipping. It was shipped in besides a box with packing in w travel laptop bag.
It is being returned by the buyer who claims that claims the lcd screen on it no longer works. He initiated a return which ebay accepted and have to send him a return label. My question is supposing on return it was not tampered with and is infact broken, how likely it is and what I would need to file a successful insurance claim.


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