Queanbeyan man David Mark Williams, 38, who had previously plead guilty to drug trafficking and possessing proceeds of crime, was sentenced at the ACT Supreme Court on Friday.

When police searched Williams' Ford Raptor in December 2020, they found three bags containing 790 grams of methamphetamine - valued $493,000 at most - and more than $136,000 in cash.

Police also seized a semi-automatic weapon, a jet ski, a Holden Special Vehicle GTS Commodore, three motorcycles and property worth more than $500,000 which were all believed to be proceeds of crime.

In the 2018-19 financial year, Williams earned $65,000 in his normal job.

READ MORE: Trafficker faces make or break period after $492K meth bust

Associate Justice Verity McWilliam sentenced the drug dealer to a two-year drug and alcohol treatment order.

She also ordered Williams serve a suspended custodial sentence of four years, which he will only have to complete inside jail if he violates the terms of his treatment order.

"This is going to be really hard for you Mr Williams. This is no picnic but you need to do it in order to have any chance of a crime free life going forward. Good luck," Associate Justice McWilliam said.

The judge said in her sentencing remarks that Williams' offending was "more significant than that of a street level dealer".

"He was a member of the trafficking operation in whom trust was placed and operated above what has been described as street level," Associate Justice McWilliam said.

"[His] level of culpability was significant."

Associate Justice McWilliam found Williams' offending, including his "lengthy" criminal history, was in large part a result of his alcohol and drug addictions.

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She said while he had an "unremarkable" upbringing in Queanbeyan free from abuse and a close family network, he did become addicted to methylamphetamine about six years ago and would consume an eight ball a day.

"His illicit drug use appears to have been ... perpetuated by ease of access," Associate Justice McWilliam said, adding he had undergone periods of "cold turkey".

The judge said Williams was in an "obvious vicious cycle of trafficking and dependence", had never engaged in a formal drug or alcohol program and worried without treatment he would be "engaging with the criminal system for the rest of his life".

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