This is an excellent comment. I'd only add that it might not be enough to just label a tudei as "tudei". It's also important not to deceive one's customers. When I started my kava journey I often encountered ads and slogans suggesting that tudei was "not for beginners", "watch out - extra STRONG!", "elite kava", "VIP kava", "kava for real kava connoiseurs" (seriously, these are the actual labels). As someone who was new to the whole online kava buying I was under the impression that tudei kava was simply the best value for money. If it's just "super strong" and if it's consumed by "elites" and "connoiseurs" then why should I bother with the "weak" stuff.
Fortunately before deciding to buy some I did quite a bit of research (that was even before TK etc) and was astonished to find out that actually it's considered to be an inferior type of kava, rarely used, often referred to as "no drink kava" or "hangover kava", genetically closer to the unequivocally "undrinkable" wild kava than noble. I was also astonished to see that kava experts had been warning against it since at least the early 2000s. Even some of the earlier texts (including texts from over decades ago) referred to it as "undesriable", "unpleasant" etc. To call such kava "elite kava" or "kava for real connoiseurs" is dishonest beyond measure. Fortunately I didn't fall into that trap. Unfortunately I fell into another trap and bought a kava labelled as "noble" that likely contained wild kava, which made me physically ill. Regrettebly I shared some of that kava (without knowning about its side effects) with a more sensitive friend of mine who ended up seeking medical assistance as he couldn't stop vomiting and shitting at the same time. In light of that experience, I am not sure my friend would agree with
@Kavasseur 's slogan that "ALL kava is safe".
To this day I thank kava scientists and Garry for their service. And I obviously thank those farmers and suppliers who supply pure, noble kava.