The monetary reimbursement for responible dispensary sounds like a great idea as I would say the main factor that would possibly corrupt pharmacists would be the fact that they are trying to run a business.
It also sounds expensive...
Well considering the billions you'd save from legalisation compared to the cost for the chemists (which would be in the hundreds of millions):
1. currently billions are spent in law enforcement and, worse still, correctional facilities. With legalisation the huge reduction in cost to LE would in the first year alone be massive. Imagine the legal profession/system.
2. the black market in drugs is hitting, from the last ACC report, about $10b. This however is at a heavily inflated retail rate. Legalislation would see a massive fall in the cost of drugs dispensed from the chemist. For example a gram of codeine currently costs about $15-20 (thereabouts for a box of panadiene). I won't say the cost of a gram of heroin but if legal produced it would be no more expensive then codeine. Its roughly a difference of 95% between black market and in theory legal heroin costs. Thus if the black market is at $10b you'll see the legal market at approx $500m to $1b a year. It would probably fall in time due to the evidence that in country with decriminalised drug regime long term trends show significant reductions in drug use among the population.
3. We'd see a significant drop in alcohol use as people move to safer recreational drugs. Considering that alcohol is single handily responsible for tens of thousands of hospital admissions and chronic diseases which in turn directly costs the health system billions it could be easily argued that the health system would stand to see significant reductions in cost, in the first year alone. I would dare say the brewers and the likes of Woolworths and Coles would see massive loses in revenue. I believe its those parties who are biggest opponents to a legalisation regime (drug dealers don't have lobbyists). I would also imagine there would be a massive shift away from pubs.
In summary with billions of cost coming of federal and state budgets providing a well funded positive reinforcement system to chemists to stop em from gaming the system/customers and preventing a new black market could easily be achieved.
That said the only real costs would be a significant increase in education and mental health funding. This would be used to drive harm minimisation strategies and improve health outcomes for those vulnerable to legalisation regime (and yes some people will unfortunately lose it badly).
Personally I think the problem with the legalisation movement is that it needs a grass roots campaign (and i'm not talking about GetUp). I'm talking about a group of people, middle class, who are prepared to protest for their rights. The gays and lesbians did it even in the face of the truncheon yet the drug users in this country are cowards.
No wonder society doesn't want to accept us. We don't even have the balls to get up and fight for our rights.
On a side note it would be of massive change to the justice system considering that if we legalised we would also have to free the thousands of people locked up on drugs charges.