Kinda hard to piece this together, but am I understanding this correctly?
From that game list posted earlier, they had an inventory of approx 700 pins. Pete mentioned around 1200 arcades. So well over 1500+ units in the building.
Another post mentioned that approx 1000 items will be auctioned, evenly split among pins & arcades. It was also mentioned that many people who loaned games to MOP have already visited & picked up their games in the last month.
So it seems likely that many of the pins in that game list posted earlier will not be up for auction. I'm guessing some of the rare stuff won't even see the auction floor, or could already be gone. You'll probably have a good chance of finding a great EM though. It will be interesting to see the auction list once its posted & determine if it's worth driving down for the weekend.