I used to work as a Healthy Living Worker, withing the group of charities I still vounteer in. I set up all sorts of classes, from yoga, to healthy eating, to diabetic care, smoking cessation, parenting etc etc etc. Properly holistic, in tandem with GPs, HVs, DNs etc, based on the needs of the often functionally illiterate client base.
Overtime I was approached by very many snake oil salesmen. High priced tablets for this that and the other. We got the local chemist, who all of our clients knew and trusted, and he showed them how the very cheap bottles he carried were the same as the Snake Oil stuff, just about 2% of the cost. We set up a referral line specifically for supplements, bypassed Snake Oil man and his colleagues completely! We even collected their leaflets and used them to advertise the referral line.
So I know exactly what you mean @Leavesofautumn
I rely on cheap and cheerful B12 tablets, 1000mcg, for my aneamia. A year's worth should cost about £10. But the posh packets, ones you see advertised in magazines on telly etc, are about £15 for just 60.