Planning to get tix to Bills game before the game starts

That's a great question, and I really have no idea. I'd be very very careful buying tickets outside the Dome from those lowlifes. Then again, you might get lucky. Seems to me if it's 5 minutes before gametime and someone is trying to sell tix, you have the advantage. But I'd have a backup plan (like a bar you can go to to watch the game on TV.)