There's nothing else to the story on my end. My card number was skimmed or hacked from somewhere. I was unable to determine from where. The source they got it

There's nothing else to the story on my end. My card number was skimmed or hacked from somewhere. I was unable to determine from where. The source they got it from apparently had my address and personal details. Awhile back the human resources at my employer was hacked which included basically all my information, so perhaps its on the black market somewhere. I don't know. I assume e-bay was chosen as a platform for the scammers because e-bay aids and abets these operations by offering very good chargeback prevention via their legal team. Rather than the scammer defending the chargeback directly, they can leverage the might of a mega-corporation who has a well-oiled machine to fight the banks.