An overall sentencing discount of 45 to 50 percent may be appropriate where an offender pleads guilty at the first opportunity, provides self-incriminating evidence without which the Crown case would have failed, and gives valuable assistance to authorities in an unrelated serious matter. However, the extreme extent of criminality (31 armed robberies in 23 days committed shortly after release on parole for a similar offence) justified a high starting point of 18 years with a 14-year minimum term.
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