In his summing up Judge Crowther said "You saw them (the victims) not as people, but as what you could take from them... it was a business model to target and intimidate, displaying an utter lack of pity or humanity.
He spoke of the victims which he said were all chosen because of they were elderly or vulnerable.
Each of them had been caused "upset & embarrassment". The judge went on to say how the trauma suffered has worsened the mental deterioration of one victim who now also suffers from paranoia.
Raymond Jenkins was cheated out of £3,000 by the gang of builders after they knocked at the front door and offered to re-lay his driveway.
"He said he had to get a digger now to dig it up. He said if you give me a cheque it'll take three to four days to clear before we get the digger. I get the money from the bank, I come back, I give it to him."
"He said 'we're going for a bit of lunch and I'll be back after'. Two o'clock came, nothing. So I said to my wife, " I think we've been conned here. And we had."
A gang of rogue builders who ripped off scores of people by over-charging them for poor or incomplete work have been sentenced at Newport Crown Court
The men, from the eastern area of Cardiff, preyed on elderly and vulnerable people, the eldest of which was 98-year-old.
Tom Connors was given a 42 months custodial sentence reduced to 38 and will serve half in prison, the other half on license.
Richard McCarthy was given a 27 months sentence reduced to 25 months. He will serve half in prison half on licence.
Ben Jones & Keith Palmer both received a 11 month sentence each suspended for two years, along with 240 hours of unpaid work each and a curfew between 8pm and 6am.