Considering the "buyer" is now in Ohio presumably with the cards and declining to return to Atlanta City, if I was the victim and considering the amount, I would be seeking a federal investigation by the FBI under 18 USC 2314.
Whoever transports, transmits, or transfers in interstate or foreign commerce any goods, wares, merchandise, securities or money, of the value of $5,000 or more, knowing the same to have been stolen, converted or taken by fraud;
https://www.law.cornell.edu/uscode/text/18/2314