I've been to hundreds of Niners, Raiders, and Sharks games. My dad has had season tickets at some point for all of these teams over the last 20 years.
I think that was the loudest game I've ever been to.
Buddy of mine at work bought a ticket today for the game and paid $420 for nosebleeds.
I would never pay that much money, but I do know that the memory of the 49ers victory over the Giants will be a game that I remember forever because of the atmosphere.
That said, I didn't pay for the ticket lol.