I’ve only seen videos of this keyboard but never played one. With that disclaimer out of the way, the price is comparable to mid-range clavinova models.
The clavinova does have a piano-like body, very very good built in sounds (including binaural for 2 types of piano in mine), and built in speakers, so there’s that.
On the other hand, this one says “built to order” while clavinovas are not.
All this to say that, while expensive, it does not seem outrageous if the keyboard plays good. This one has after touch too, which makes it more comparable with a synth than a digital piano (though I understand this one is just a controller).