The situation concerning HPN pricing (and everyone else selling Niagen) is that Chromadex is selling it to everyone and his brother that ask for wholesale pricing. IOW, sales are on a roll. Chromadex is in the business of selling proprietary commodities and as markets are somewhat inefficient, there are pricing fluctuations, like we are experiencing now amongst vendors. But over the long term price rules, and everyone is subject to that, so prices are falling to a point where the profit is minimized, but survivable.
Everyone is selling more or less the same product. Some are cleaner than others, but many likely don't care. As has been mentioned before, some time ago, when Niagen wasn't so popular, before the hype, the price was lower than today, and vendors were still making a profit. I would venture further price erosion is inevitable, but not absolutely guaranteed. We shall see.