He sent me a bogus Bitcoin transfer email from a well known escrow service.
I stupidly did not check header information, as I was in a rush at the time, and shipped without confirming it.
All was well, until he sends me a picture of the card, with essentially a HAHAHAHA, various derogatory remarks, name calling, you name it. I was calm, and collective, tried various bargaining options to recover it. His arrogance was overwhelming.
He posts all over forums, showing how clever he was. This is where he made his fatal mistake.
Investigation begins. I sift through tons, and tons of forum posts, all over the internet. Come up with a handful of names, and various aliases he uses. Was able to confirm that his current location, was around the area where the package was sent(to a home).
Got in contact with the feds regarding online scams, no response.
Got in contact with local police, they tell me nothing can be done, contact feds.
Got in contact with the local news of where the package was shipped, who gets me in contact with the local police that they are friends with.
Police contacts me, and I send over all my logs and information. Police make some visits to the destination address, and it turns out they are actually the friend of the kid.
The kid finally breaks, and furiously emails me scared that the cops are coming for him, and he demands that I send him my return address so he can give me back the card. Apparently he threw out the box. He wants to know how I could do this to him, and that it was all just a big joke. I refuse, and ignore future pleas.
I speak with the cops, who now have tracked down the kid, and they speak with him and his parents. They said I can press charges, which I did.
His father emails me, and starts tearing into ME, questioning how I could possibly sell to a minor, without parents authorization. Over, and over, and over. I tell him this isn't my problem anymore, either the card is paid for, or I'll see them in court.
A couple days go by, his mother emails me, apologizing profusely, we set up a Paypal transaction for far more than the card is worth(I initially listed it at an inflated value). Done.
Speak with the cop, give the OK, case closed.
Feds email me a month or two later, saying nothing they can do, contact local police. :)