Police would actually investigate this if you reported it to them, if you talk to the right cop they'll have someone on the scammer's doorstep the same day.
I once won a $400+ chargeback thanks to the police, they put the scammer under house arrest a few hours after I reported him, and then he called me up begging to pay.
The funny thing is after all that I lost the chargeback case itself, cause credit card companies suck, but the scammer sent me a moneypak so it ended up fine.
It's always good to have friends in all kinds of positions.
This is one of those times when it comes in handy to have a police friend.
eoakland probably doesn't have a police friend but maybe someone here could introduce one to him
I have cop friends but I don't live in the US.
Good luck!