In my opinion, if you could afford $35,000 for a Vantablack wrist watch, you can afford another $35,000 for this one too haha. I doubt many of those purchasers were on the bubble.
High end watches aren't priced like regular consumer goods; you can resell them for close to (and sometimes more) than you paid for them, so the "cost" is much much less than the price.
What's most interesting about this watch is the steel/vanta combo costs the same as the solid gold version without vanta. Apparently just that small bit of vanta costs more than a large chunk of gold right now.
I was thinking the same thing. You can see how they must have felt a black circle on a screen doesn't look too impressive, but this is a rather backwards way of dealing with that. (I would have added shine to the background and watch body but not the face...)