I originally got the numbers from Wolfie's post which stated "This currently benefits about 1300 addicts ... cost is covered by Swiss health insurance to the tune of SwF1114·5 million (US$810·5 million) per year."
This works out to my figure of $625,000.
But, it did sound high, so I looked up the original article which states, "The cost is covered by Swiss health insurance to the tune of SwF11-14.5 million (US$8-10.5 million) per year".
So, TO ALL, the average cost per addict per year should be $7,000. Slightly lower.
That would put US heroin treatment at $6-7 billion per year.