As a similar small startup tube production company is Dalibor Farny who is recreating nixie tubes. Their youtube videos are phenomenal on the attempts to make a vacuumed sealed nixie tube.
On the plus side, Dalibor himself has been extremely helpful in answering questions and resolving minor issues with the clock (both software issues, both quickly resolved).
It is undoubtedly a hard to justify luxury item, but if on the fence you should buy it. It is more impressive in person than I imagined.
https://www.timesticking.com/steve-wozniaks-nixie-watch/
(Googling it, I discovered Nixie tube watches are "a thing" and you can buy them)
The hand made ones are also instant heirlooms, particularly if their batteries are easily replaced.
He's got to be one of the world's experts on nixie tube manufacturing, at this point.
https://www.daliborfarny.com/product/puri-nixie-clock/
For $1700, I might think about it first :/
They were somewhat cheaper back then though....
And one of the tubes is acting funny (slowly fading from the bottom), which I should probably do something about. But it seems like it's stabilized, so maybe I can keep on ignoring it!
If it becomes a hand me down to your kids, well that makes it even more special.
I have some stock that I'm going to sell soon, and one of the things I'm buying (besides a car) is one of his nixie clocks.
They'll be timeless decades from now.
Hopefully not.
nixie manufacture at a non-industrial level is pretty involved, so each tube has to pay for someone manufacturing it for several hours, and that's before you even get to material and research costs. I do wish these tubes were more affordable, but the price is unfortunately pretty understandable.