It's a little expensive for only two people -- it is a much better value when you use it for a large group or family (that often split up).
I feel it is worth it IF you plan on spending the time to get your photo taken .. either meet and greets or the "Photo Pass" spots. If you don't want to spend the time doing those things, all you really get is the ride photos (which are fun, but not worth the $100+)
That being said, when I get Photo Pass .. I specifically make sure we take time to get those posed photos at landmarks. You get some really great ones. Last year at Epcot (during Flower and Garden) we went out of our way to get maybe 6-7 different posed spots .. and that was okay (we weren't going on many rides anyway with a 5 month old). But we were also sharing the pass with three other families and made it quite affordable.