I agree, the price point is far, far too high.
…But then you also need an attachment between your phone and the xbox controller. Which do exist but might be on rare offer. OP and everyone else who picked it up want a particular experience, and accessories like this aren’t a wide market.
Truth be told, I started watching Once Upon a Time In Hollywood having zero context of what the hell the story is meant to actually be about until half way when someone told me, and it vastly improved the movie.
Like, the woman just looked like a useless character you know. And would keep looking so.