Well, as I've said before, I know for a fact a friend have sold his so at least to me it isn't new. Since i've created this post I got to know 2 more people who have sold and bought one for adena (and no, not to each other lol). As for the ncoins to $ conversion, I don't really look into since I do not play to get $ or ncoins, just ingame Adena
Anyway, after judging from other transactions, name, level, points (50% to next level), I would place the minimum offer I could listen without blocking the 20 bil.
I can't reveal that but it is an old clan, from Devianne's era