The article "Drug law reform will pay for itself" (Nation, November 8) talks costs and positive benefits, as estimated by Shamubeel Eaqub of Sense Partners.
But much detail is missing. Drug users feature in many kinds of crime.
In 2006 the Treasury wanted to know the cost of crime in NZ. The study by Roper and Thompson estimated $9.1 billion, but it was a sparse, inconclusive review.
In 2011 WHO estimated the cost of all crime in NZ to be $18 billion, warning that figure could double with further research. The cost to health alone is largely unknown, and yet it is most exposed to costs of crime/public injury every day.
In 2006, the group, "Rethinking Crime & Punishment", estimated the cost of justice to the private and public sectors at $7 billion, and in 2011, their study costed each homicide at $4 million. When a competent study is done we will all be shocked at the billions of dollars we spend on crime.