I didn't see anything about this in the rules, but DO NOT trade with masterpdx from Portland, Oregon. We had started a deal in the Amiibo Deals and Discussion thread and moved it to PMs (https://www.cheapass...ead/?p=13752342).
I sent my NIB Skyward Sword Link to him in perfect condition. He then sent me his NIB Twilight Princess Link (before the recent restocks ugh...) and the amiibo box was damaged. He has failed to respond to any of my messages requesting we return the amiibos and he has now blocked me.
EDIT: I have PM'd Pookymeister to add to his Bad Traders thread.