"15 It is obvious that the quantity of drug actually manufactured must be a relevant factor in the sentencing for the offence. However, I do not accept that the potential of the manufacturing operation is irrelevant. It is relevant, particularly to the overall culpability of the offender. It is an accepted principle of sentencing that an offender who commits an offence with premeditation, after meticulous planning, and taking all possible precautions to ensure that the enterprise will be successful, may well, if all other things are equal, be regarded as more culpable than the offender whose participation is unplanned and impulsive.
16 The degree of danger to the community posed by an offender and the offender's need for personal deterrence may also fall to be evaluated against the context of the offender's overall plan or aim in carrying out the offence. It would not appear to me to be unreasonable for a sentencing Judge to reach a view that an offender, who manufactured methylamphetamine as part of a deliberate plan to produce a significant quantity of the drug for distribution into the community for his profit, required a sentence more severe than would an offender who produced an identical quantity of the drug either for his own consumption or as a matter of idle curiosity, intending to produce no more than that amount.
17 To take account of these matters is not to sentence the offender for an offence which he has not committed, or for the manufacture of methylamphetamine which has not in fact been manufactured; rather, it is, as the Sentencing Act requires, an evaluation of the offence against the whole of the surrounding circumstances, and the circumstances personal to the offender (which circumstances include his understanding and his intentions in relation to the offence).
18 In this case, the learned sentencing Judge recognised that this offender had in fact produced only what he described as a "small quantity" of the drug but also had regard as in my view he should have, to the premeditation and planning, to the scale of the enterprise and to its potential."