11-08-2020 1:07 PM
Have you read eBay's policy on autographed items? If not, see: https://www.ebay.co.uk/help/policies/prohibited-restricted-items/autographed-items?id=4283&st=12&pos...
This is one of the very few cases where even eBay admits that autographs are easily faked, and urges buyers to be careful.
The mistake you're making is to imagine that it's your role to protecting other buyers. It isn't. EBay is famously reluctant to remove items just on the say-so of other members. However, they do give very clear guidance to buyers about buying autographs, and if an item isn't as described the buyer can use eBay's money back guarantee.