Every 5 years, not 2. If your battery only lasts 2 years, that's your fault.
Yes, it's just a sticker. Porsche doesn't make batteries.
94R AGM is closer to $175-$200
I'm not trying to dissuade anyone from going with AGM, it's just my personal stance. Of course, it helps that I can go down to the distribution center and get a brand new unlabeled lead acid 94R for $25.
Whatever floats your boat!
