I dunno, I know with me I have about 6 bod frenzy days a month. I collect bods via Idocs, and once I get around to filling them all I pop up anywhere from 2 to 6 barbed runic kits on my luna vendor, and usually sell them for 2.5 mill each. Mine are obtained the legit way, by A LOT of mouse clicking and the occasional kick to my computer, and many many many hours of pondering why the heck am I doing bods?
So just because someone is selling a few barbed kits doesn't mean they are duped/scripted. The vendors to watch out for are the ones who ALWAYS have barbed kits at least 4-6 everyday of the month. Thats quite impossible to do and keep stocked. My kits always sell out within 2 days at least. But thats just my 2 cents