What would you do?

If I don't get a response from Nexon in a week or two, I'll just record myself NPCing it after showing & explaining it's illegitimate. I figure if anything I can at least try to set an example of how to handle a situation like this.

As much as I completely understand why you would do this, and would probably do the same if in your situation, as someone who has never seen more than 1b meso in my inventory, reading that someone would just throw away 4.5b meso like that makes me cringe.