re: Getting tickets at Fenway

It's simply not true that tickets are more expensive day-of. They're typically less expensive, because people would rather deal with a reputable online agency and have the tickets in hand in advance than deal with some shmuck on the street. That being said, the peace of mind of having them in hand in advance is often very much worth the cost, and the selection is much more diverse online that it'll be on the street. I'd recommend waiting until a few weeks in advance of the game, because prices are typically inflated well in advance (just the way college football ticket prices are inflated in the offseason and go down a bit once the season starts).