And that doesn't say how many coca leaves it takes. Which is a whole shitload.
I once had coca leaf tea (mate de coca). Obviously a fraction of the strength of cocaine. I did not care for the taste, sort of like damp straw, but the effect was so much better than caffeine. Total alertness without a jittery feeling and it wears off after 3 or 4 hours.
Honestly, if they could do something about the taste, I'd find ways to import it.