Jason Amoroso, 36, was sentenced to three years and three months in prison, with a non-parole period of two years in Wollongong District Court on Thursday.

Amoroso pleaded guilty to knowingly taking part in the supply of a commercial quantity of the prohibited drug gamma-butyrolactone and two counts of ongoing drug supply of methylamphetamine and GBL, commonly known as GBL.

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Agreed facts said Amoroso became the target of police telephone intercepts after a strike force began investigating the supply of drugs in the Illawarra region in January 2020.

The court heard Amoroso supplied either ice or GBL on no less than 60 separate occasions between April 23 and July 19 last year.

Amoroso would receive calls and arrange for delivery of the drugs before he would accept payment in cash in person or receive deposits into his bank accounts.

The telephone intercepts revealed Jade Asher and Kelly Dent were also involved in Amoroso's drug sales, with both women pleading guilty to their roles.

The transactions were all "relatively small scale", the court heard. The largest meth sale was for $1,100 and most of the GBL sales were for amounts between $100 and $300.

In early July 2020, phone calls between Amoroso and Dent revealed she was attempting to buy a large amount of GBL from a supplier in Sydney for $2000 a litre and Amoroso transferred her money.

Dent was stopped on the side of the M1 Motorway at Maddens Plains returning from picking up the GBL when police searched the car and found seven bottles containing a clear liquid.

She told them it was "just water" but later analysis confirmed one of the bottles contained 2251 grams of GBL. Police executed search warrants at Amoroso's residences, seizing drug ledgers and other items before he was arrested in August.

In court, Judge Andrew Haesler said while Amoroso's actions were "low level", he "conducted an effective retail distribution operation over the course of three months" to a "broad customer base" and "negotiated prices".

Judge Haesler noted the profits Amoroso gained were largely used to purchase drugs for his own use.

Judge Haesler noted the profits Amoroso gained were largely directed to the purchase drugs for his own use and he "chose to fund his need for the drugs by selling them to others in the community".

"Notwithstanding his own usage he remained clear thinking enough to be able to carry on his trade in a rational, clandestine and efficient manner," he said. "And he did make some profit enabling him to support himself and his drug habit."

Judge Haesler said Amoroso's life had been "blighted" by his drug abuse yet regardless he "played his part in a supply involving over two litres of the drug".

"He was intending to on sell that drug," he said. "He was not moving into the big league. This was a very low level commercial supply."

Amoroso grew up in Kiama and undertook a carpentry apprenticeship but fell into "problematic party lifestyle involving drink and drugs" before he became a regular user of GBL and meth.

Judge Haesler said Amoroso needed to get help to deal with his long-term drug addiction once he released on parole.

He also took into account Amoroso's criminal history and that he was on bail at the time he supplied drugs.

The court heard Amoroso had "some insight" into his crimes and had engaged in courses and earned a TAFE certificate while in custody.

Amoroso's jail sentence was back dated to November 2020 and he will be eligible to be released to parole in November 2022.

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