TLDR: Soon (by PAX East, I believe) you will be able to buy a box from PA with one (or more) pins in it. You will not know what the pins are. It could be a Broodax Gabe or an Aus Kemper or whatever. The pins in these boxes are the ones people have traded with staff.
I've been thinking about and waiting for PA Pinny blind boxes for a while, and so was shocked when people in the PAX Prime Pinny Trading Event line didn't know about them. If you follow Disney pins at all, you know that you can buy boxes with unknown pins in them. Usually it's two pins out of an eight pin set (Muppets, for example). So you could get Beaker and Fozzie, or you could get two Fozzies. Etc.
So, at some point, we asked PA about what they were going to do with all of the pins that people traded with them. I know, for example, that a lot of Aus people traded away their Aus pins for Gabe and Tycho pins (CTS and Zombie). So there's a good number of Aus pins at the PA office, just waiting for loving homes. And, at some point, I was told that they would do blind boxes like what Disney has. Which is very exciting
At Prime 2014, I actually saw the blind boxes. Anyone who did the Pin Trading Event did. They had Merch on them, and Merch had a blindfold on (get it? blind box). Gabe was even doing a Blind Box challenge (put down a pin for trade, and get whatever pin was in the box). I got a CTS from that. I asked if I could have the box, but they said no
So, sometime soon, my Pinny people, we will be able to buy blind boxes of pins. I, for one, will be purchasing a few and hoping that I get Aus pins
Prepare your wallets.