Text messages from prospective clients and more than $100,000 were found at his home.
The court was told Bradley had purchased 84g of methamphetamine on July 24 last year for $40,200.
When police raided his Rotorua home on August 10 they found 9.7g of the drug, along with electronic scales and the cash.
"There was an analysis of the data from your phone and that's given rise to the charges of supplying methamphetamine," Judge Cooper said when Bradley appeared for sentencing.
"Numerous texts were found on the phone requesting methamphetamine and there were a number of occasions where people purchased methamphetamine from you.
"The 9.7g that was found was effectively what was left," the judge said.
"I accept that some of that amount would have been for your own use. It's also clear a significant amount was for the purpose of supply."
Judge Cooper said Bradley had previous drug convictions. The most recent was in 2004 when he was sentenced to three years and nine months in jail.
He had attempted to turn his back on drugs but had soon fallen back in with the same crowd.
Bradley's lawyer, Bill Lawson, told the court his client had struggled for a considerable time.
"But this isn't a situation where he has been living a lavish lifestyle," Mr Lawson said.
"He mows lawns, does odd jobs around people's homes. He's not living the high life off drugs or anything we would see from a significant dealer."
Bradley had admitted the charges at his first opportunity.
The court was told that Bradley had attempted to rehabilitate himself but was kicked off a residential programme when drugs were found in a room he shared with someone else.
