I do not know if Chromadex is making it, or having it made. Their patent is not yet granted, but it is a sword of Damocles hanging over those who would dare make and import it.
Yeast fermentation is many times cheaper than chemical synthesis by orders of magnitude. If chromadex' patent holds (far from certain, if someone challenges - the deeper purse usually wins in court) then the investment in making the stuff can become a loss.
I've not found a legitimate supplier in China - we have one case of red rice yeast, another plain old nicotinamide being passed off as nicotinamide ribocide. That doesn't mean there is not a source, but it is liable to be expensive. I was quoted 17,000 a kilo by a trustworthy fellow I know, so his source was probably 9000 a kilo or so, if he really had a source yet.
So my conclusion is we can pay to have it synthesized by yeast -- it doesn't have to be the organism dstein located, I suspect a Chinese University lab could breed one in a week, but the patent is so broad that any yeast with the appropriate genetic knockout would be covered. There are legal arguments against the patent, and the Chinese might show prior art voiding the patent, but that doesn't encourage them to make it, though I will suggest it. Companies often apply for patents, "patent pending", to discourage competition. It's working. I do not know how likely this patent is to be granted, or upheld if challenged N.B. Chromadex has a patent for producing Pterostilbene, but the Chinese still make it and will ship it to you.
So: we can crowd source the funds to rent a suitable facility to produce NR in volume, and distribute to our own "club", circumventing any patent, but it requires investment. (I am guessing 25,000 would produce 25 to 50 kilos, but that is a guess). And we would need micromanaging by Major Legend, and possibly myself. Major Legend, 我假设你能说一口流利的普通话? I do not, really, beyond basics.
As for whether this stuff is worth the effort, that is the question. We take a lot of things on faith, the theory behind NR looks good, it's good for mice apparently. Niagen hasn't hurt anyone yet. Or it might make you grow horns and a tail.