@zavik, And any other members, post the username(s) of these individuals. I had a buyer do this recently. The scam opportunity is you wait too long and they can open an INR.
In my case they tried to do just that, opened an Item Not Received case on ebay, they immediately lost, as I shipped with tracking. They opened an Item Not Received through paypal, which they also immediately lost. They also went full retard and left negative feedback stating, “the card is fake”. Acknowledging that it arrived… Of course ebay removed that immediately.
Tl;dr block and avoid anyone who pays and wants you to wait and ship. Its an unreasonable level of risk to absorb as a seller.