Ebay doesn't sell anything, and the seller is outside Australian law.

Ebay can't possibly check millions of listings every day.

Just open your case for INAD in Paypal, get your money refunded and buy from a licensed

Australian seller who will give you a real warranty.

Preferably from a bricks and mortar shop.

You should have done due diligence when purchasing.    21 negs, most of which say fake/counterfeit should have rung enough bells for you.

Seller's % is 95.2%   It is not recommended to buy anything from a high volume seller below 98.5% IMO

Hopefully you are within the 180 days to claim.