He says they worked for him, and he remains skeptical about the necessity for a ban
Using reasonable assumptions about the cost of transport and retail markups under a commercialized regime, one 2012 study calculates that the price of cocaine (prior to any taxation or fees) could fall 96 percent, from about $66 to $2.78 per gram at 63 percent purity, and retail heroin prices could fall by 98 percent, from about $140 to $3 per gram at 55 percent purity.47 For marijuana, a recent study calculates that if high-potency marijuana could be legally cultivated in large grow houses (at $200-$400 per pound), the retail price per ounce could fall by more than 80 percent.48 If plants could be cultivated in large outdoor fields, the same study estimates that the price decline would be even greater, albeit for a less potent substance
5 If I Dont Want to Take Drugs to Quit, What Else is There
van Osch FH, Jochems SH, van Schooten FJ, Bryan RT, Zeegers MP (2016) Quantified relations between exposure to tobacco smoking and bladder cancer risk: a meta-analysis of 89 observational studies