Cameron Smith, 37, of Huntingfield Drive, Warrnambool, pleaded guilty in the Warrnambool Magistrates Court to trafficking a drug of dependence.

He was convicted and placed on a community corrections order with the conditions he do 100 hours of community work.

Magistrate Cynthia Toose said it was a very serious charge and she was skeptical about claims Smith's enterprise was not commercial after he told a client the price was going up.

She said Oxycontin - also known as hillbilly heroin - was a very powerful drug and anyone convicted of trafficking could expect to be convicted.

Police seized a mobile phone during a drug operation and found a large number of messages.

Some of those messages related to Smith supplying six boxes of 28 tablets of 40mg Oxycontin for $350 each during October and November last year.

Defence counsel Amanda Chambers aid her client was worried about the court process, he had no prior court appearances and no one in his family had ever been in trouble with police.

She said she had not asked where Smith got the Oxycontin.