well this is the thing, isn't it? Someone has supplied this deranged character. By any civilised standards - that should have been illegal - I think we can all agree on that.

the question is, whether you have laws in place already that should have prevented that, and whether those laws are being applied with sufficient vigour.

Never mind about the penitent feelings of the dealer - common sense says he should be doing time for the evil consequences of his acts.