The only on-ride photo I've ever purchased was for my daughter's first ride on Magnum. It was only because she was so proud of herself that she had conquered her fear and had actually gone on, and that the photo was her "proof" to her friends back home.
I'll probably get one on MF for the same reason, but otherwise I don't buy them.
Maybe if they were 2 or 3 bucks I'd reconsider, but anything more than that isn't worth it to me.
As far as sodas go (I've been away from Pittsburgh for 12 years now, so I've gotten away from calling it "pop") I don't buy those in the park either. Usually I have a case on hand back at the Breakers, but even if I didn't, I still wouldn't pay $2. Didn't pay $2.50 at Disney World last month either. I guess about a buck and a quarter would be my limit for a 20 oz. soda.
-------------
Duane Cahill
Coming soon to an amusement park near you.