Wow, okay. I was thinking about this all wrong. When they said "each" I thought it meant per game. It really is for the season. You add in the donation cost (which you are kind of locked into forever), which adds to the price. But that cost is also spread out across however many season tickets you're buying.

The biggest problem is that if you ever drop the season tickets, you have to keep paying membership fees if you ever want season tickets again. (From my understanding.)

Edit: Actually I've been looking into the last part. I think the required membership fees are only $50 yearly. There's a stipulation for maintaining the same donation amount, but that's only for keeping your seats in the same spot.