it's the fault of the seller and not me
It may be, but eBay warns buyers in the user agreement that they do not guarantee the quality of items sold here, that they will be truthfully described, safe or even legal.
You also accepted that eBay's own money back guarantee only lasts for 30 days, after which it will have no interest, whatever happens.
As has been said, depending upon how you paid your best hope now is that your paymment provider, e.g. credit or debit, or Klarna, may be able to help you.
Always remember that buying from unknown sellers on eBay is not like buying from the shops. eBay is a jungle.
