This master plan to capture this thief is now thwarted with your public post on the most widely visited Comic news blockchain platform in the entire state of New Jersey. All hope is now lost...
Seriously, this guy could pay for the peoplefinder services online and likely track him down for $30. eBay might have an investigatory group to contact for analytics. He could also create a saved search for a certain radius for the comics he feels were stolen if they pop up for sale again... he'd get immediate alerts and could then see the sellers' review history to hopefully dig deeper on prior sales. ...I have 2 super high level contacts there that I would probably be able to bounce ideas off of. Might be worth suggesting.