This is normal for big SEC games. Alumni consider it their primary entertainment in life and pay up big-time for access and position at games. How do you think it's possible for the coach of Alabama to be paid $6 million per year? While the athletes mainly get under the table payments in $500 "golden handshake" walking around money. Same is true of all the big names football schools.
Actually, one of the CBS sports broadcasters said that some of the tickets went as high as $10,000. I think that's ridiculous to spend on one sporting event but if you have that much disposable income, then more power to you.