Okay, Devil's Advocate here, but sometimes the pins end up in estate sales, or the owner dies and her survivors aren't Greek and don't know what to do with it, so it goes to a collector. It's not likely, but it is possible.
There was a post in a Pi Phi thread about a really rare and lovely arrow pin being up on ebay and , truthfully, I would love to have been able to buy it in case one of my daughters ever pledges Pi Phi.
JMHO, but it might be the case....
