They actually do this for some very high profile events - they require you to send in your tickets before they are placed for sale on the site. The Super Bowl is one, the Mayweather-Pacquiao fight was another. But regardless of whether or not it is a high profile event, the seller should only be given a few days to deliver the tickets after the sale. That way this kind of thing won't happen. If this seller only had 5 days to deliver the tickets, for example, this buyer would have had his tickets long before the announcement.