The three men then drove to Higgins home in Brookfield and hatched the plan to rob the Z Service station for cash and cigarettes, intending to use the cash to buy methamphetamine.
The trio then drove to the station and put their plan into action.
While Higgins waited in the car, Guttery and Shelford who were both armed entered the store as the female attendant opened the locked doors for another customer.
Once the customer left, the attendant confronted Guttery about his suspicious behaviour.
Guttery, armed with a knuckleduster and with his face hidden, approached the counter and placed a backpack on it and stated "give me all the money in the till".
Shelford, who was armed with a knife raised it and asked for all the smokes, and thrusted the knife in the store attendant's direction.
She complied and put the smokes into the bag and handed over the till.
As Shelford ran off through the carwash he dropped the knife and till, which were retrieved by Guttery, and the pair hopped into the getaway car and Higgins drove off at speed.
Back at Higgins' place the trio began dividing up the cash and cigarettes, and Higgins began smashing up the till but the group were disturbed by a sleeping occupant at the house.
HIggins and Guttery put the till into a plastic bag intending to discard it during a walk, but as they left the house they were arrested by police in the driveway.
Shelford was arrested inside the address, and the stolen items were recovered inside the house and the knife was found lying in the back seat of the vehicle.
All three men will be sentenced on August 11.