The issue with eBay is there are literally hundreds of thousands of items listed and no doubt thousands being reported for one reason or another each day, each of these requires human interaction and like you say
@More Glue Than Wood, with no experience of the cricket market it's very much a "his word against mine" scenario so a lot of it will just fall through the cracks unless the seller is consistently getting reported.
Naturally I completely detest any of these fake sticker companies, the amount of bats I get sent in for refurbs with 'eBay' stickers on is simply ridiculous - I've even had sticker companies contacting me offering me counterfeits ffs.