No offense but not much leaves SA over 70% these days, the farmers and manufacturers are beholden to the cartels and that is just a fact of life and they have perfected to cutting with all the nasty adulterants at source these days to bulk out and maximize profit.. Irrespective of the fact you may be shipping from Colombia you would have to be VERY well connected to access the best quality merchandise. I spent a few months in South America a few years back and the best quality gear I found was in Bolivia from a manufacturer, actually watched it being made!! insane quality but very small scale and they certainly were not exporting. I hope you find a way of ensuring quality but i hate to say it buying from a source country doesn't count for much, in my experience anyway.