not a bad answer regarding recent information, but almost completely
lacking the historical information asked for... moreover, sim posted
almost exactly what the commenter posted.

exactly what I asked for...thanks!

Thank you for all of your detail and open-mindedness.
[Did you see the prices for the Marinol?  Sheesh!]

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danka!

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This answer was comprehensive, accurate, and very helpful.  Thanks,
Google research!!

Very useful links that I completely missed in my own searches.

I already had done a few web searches on the subject, but this answer
provided me with several new paths to explore. Thanks!

It may help to routinely include the search stratefgies used in the
answer. I am happy with the response to my question and feel that I
got "value for money". The advice from the comments from other readers
were also a big advantage. Thank you.