Believe that $10k figure is the cost of building that prototype as a 1 piece by Lynskey. Including all the jigs and machinery tuning required to build a one-off, its probably a reasonable ballpark of how much that piece costs if the reporter was to carry it off there and then I guess ??

I'm quite sure as a frameset, it will drop below the $3k mark once it starts producing in the 20pc/batch range. And lower still once it goes into the 50pc/batch range and as the jigs and fixture costs get further amortized.

That's just how production costs goes.