Well, you're not making money on $.6 / kilo on just about anything, let alone bud.  So how much do you get per acre?  Anyway, you shouldn't need "vast" amounts of chemical to grow inside - why would you?  It's easier to control bugs in a CONTROLLED environment.  The company recently busted for using banned pesticide had to destroy all their product and won't have any until July or something.

Anyway, I think it's a good idea to regulate to protect consumers against spiked product.  Also, a multi-billion dollar industry should be taxed.   Just wish they'd do the same with all recreational drugs.