This Battlefield thread from not-too-long ago, I had posted (#27) in this thread some comparison scans along with examples and information others had posted as well. This may help give an idea/illustration of what they do to doctor scans and commit fraud.
http://www.net54baseball.com/showthr...=185850&page=3
I recall sending or reporting this to eBay with the usual eBay response/action. Nothing. Actually, no - eBay has done something about it since .. they suppressed history information making it tougher to investigate/prove this.
eBay doesn't care about the positives outweighing the negatives so much as the overall volume of items bought and sold by Battlefraud and the steady income back to eBay they provide.