thanks mate!I signed up a few years ago. First year has a extra 160 bucks joining fee, but if you stay a mfc member, mfc will waive $50 off for afl club support. You basically get 40 games for free, as long as it's mcg or Etihad. If you book, it's 9 bucks extra for a reserved seat, and basically straight across from mfc. After your first year, it goes down to 440 a year from memory.
Worth it? Maybe. I saw a lot more games last year but lost interest in most afl this year. I'd say it's worth it if you plan on going to 20+ games, and at least 2 or 3 finals.
Finals are 21 bucks until the prelim them it's 170 odd. If you want grand final access, forget it.
Hope that helps.