Local, IRL connects for lsd are underrated. Or maybe it's hard for other people to find good sources, idk. I've always gotten some strong lsd trips through these connects, depending on how much I take.
And after using lsd many times, I would know for damn sure whether they were nbomes or not. Maybe someone who's new to it would be fooled, but the effects are distinctively different (from what I've read), and esp the duration would be a big give away, along with the numbing of the mouth.
Anyway, whatever the dnm has, I'd hazard a guess to say that some of those are probably in the hands of locals as well. As well as locals having stuff that the dnm do not have, and vice versa. This is probably the same with mdma and other popular substances. Since the dnm seems to somewhat equate to the black market, locals and the dnm probably fill in the gaps for each other.