human
Rubbish, Gold Mountain. It costs pennies to produce a typical dose of 100% purity cocaine or heroin in a pharmaceutical setting. They could be sold at cost, in pharmacies, for less than a buck a hit. 
Meanwhile, criminal risk requires a big incentive .. which is why street drugs are so expensive. No dealer could undercut a properly managed regulated supply in any of the ways you suggest.
gpt
{"moderation": ["toxicity"]}