Well, following a buying lead i posted on alibaba, a supplier from ecuador based in the united states (ecuadorian rain forest) contacted me and offered me some herbal extracts at a more than low price. They offered to send me samples at their own expenses and they did.
i received the samples, they were cooking spices, but very professionally presented as the herbs with scientifical data. Basically, they were scammers from the USA, preying on the ones that dont know what these herbal extracts look like and want super cheap providers.
i say, be wary, EVEN if it comes from the so called safe countries (USA, Canada, europe, etc.)
hope it helps,