I think your pricing is valid, but just for comparison, here is what I came up with:
The squishiest number here is the “Ongoing immersive and interactive entertainment.” There are a lot of cast members involved - more than I would have thought! Is that equivalent to The Cursed Child? Or more like a Plaid experience, as you used in your calculation? I expect the immersive CM experience is why Disney is justifying their high price. (I hope they are paying these CMs well.)
Here’s where I first posted the above: