Cost of gas. It would be an extra $250 in gas over the course of the season (based upon gas at $4.00)
I can't bring myself to email my ticket rep to tell him. I said I'd let him know by the end of business today, but he was out of the office so I'm still procrastinating. I most likely won't be able to get my seat back, it's center ice. The waiting list is 2 years for any season seat.