I should have answered in a less joking fashion.

The seller is being asked to extend credit to someone they don't know.

The buyer is being asked for CIA from someone they don't know, but who does seem to have a picture of an item.

In today's world, "How do you bridge this gap?"

Once you go beyond credit card dispute limits, there aren't as many options, yet, the stakes are higher.

I pay the fee to have the item sent to a well respected local gunshop. The disinterested 3rd party.

Out there doing it best I can.