Koullias, 24, plead guilty to three counts of supplying a prohibited drug commercial quantity, dealing with the proceeds of crime and knowingly directing a criminal group in August 2020.

Other charges of supplying prohibited drugs were also taken into account in her sentencing.

She received an aggregate sentence of eight years' imprisonment, with a non parole period of five years, which commenced upon her arrest in February 2019.

She will be eligible for parole in 2024.

Koullias was arrested in February 2019 with her sister Patricia Koullias and associate Cody Ward over their involvement in a $17 million drug ring masterminded by Ward and run from Callala Bay.

Ward would import the drugs over the dark web, and Shanese would then package and distribute the drygs via Australia Post.

It is not known how much she was paid, but the court heard on one occasiona Ward had given her more than $6000 in cash, and when she was arrested police found $15,000 in cash.

Sentencing Judge Robyn Tupman said Koullias "did not show overwhelming insight" into her offending, but accepted Koullias had shown remorse.

Her early guilty pleas entitled her to a 25 per cent reduction in sentence, and her youth, potential for rehabilitation and prior clean record were all in her favour.

Judge Tupman said that while she accepted Koullias' own drug habit was part of her motivation to offend, she found Koullias' offending to be mostly motivated by money, and that Koullias played a significant role in the organisation "well above the level of a street dealer".

"She was not just following orders," Judge Tupman said.

"She had some degree of autonomy and was involved in planning."