You realize this is a motion picture camera, right? It's also rather expensive. I was being a bit facetious with my suggestion but 35mm movie cameras do use large magazines and may serve your purposes.
Actually, I don't think you can literally buy a new Panavision camera so my answer was not 100% accurate. I think they only rent them.
If you really do want a 35mm movie camera there are others besides Panavision that you can buy though they would not be new as far as I know. For example Arriflex 35mm cameras exist but they are no longer manufactured.