Honestly, this cost is on par with other book-based photographic collections from small, bespoke printing companies (Such as Lodima Press). The real question is how many copies did they run. This will determine whether or not the cost is justified for the value you get from it.

As an example, a few years ago, I purchased a copy of Edward Weston's "Life Work" from Lodima when it was released. I think I paid ~$150 for it. They're now selling it for $1000 per copy because they have a limited number left.

If Apple printed thousands and thousands of these, then I doubt the cost is justified. But if it was a limited run, say less than a few thousand? Seems appropriate to me.