If you recognize and accept that the majority of group buys are as Zippity succinctly described, I do enjoy the modest savings, 3P testing and not jeopardizing my Global Entry/TSA Pre status. The smaller, private endeavors are much better - we all know each other and there’s an element of trust - we take care of each other (“can anybody spare a half kit of R30 until my next order gets in next month?”).
I continue to be pleasantly surprised that there’s not MORE scamming in this world. Or I’ve just been ridiculously lucky.