Stupid stoners and idiot pro-dope losertarians are to blame here. But either way - black market (cheaper) or taxed and legal (expensive) - the winners are the drug cartels.
The gun grabbers and New Deal big government champions do pretty well.
As soon as pot is legalized, pot smokers will have to face a voracious government trying to collect as much tax money as possible as opposed to dealing with and overwhelmed police officers and a justice system that could really care less.
Tax and spend liberals are to blame there. The black market should NEVER be cheaper than the white, if it is taxes are too high.