Rail Minister Winston Peters is disputing the reported final cost of dumping the mega-ferries project which sits at $671million dollars. 

Peters argues the 449-million for infrastructure, project management, and wind-down costs isn't all lost, with elements still being used. 

Settlement for cancelling the contract with a Hyundai shipyard for the two new inter-island ferries cost 144-million-dollars. 

It brings the total paid to the boat builders, to 222 million. 

He says that was actually lower than the 300-million originally provisioned. 

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