Current figures: 49 children in detention on Nauru. Average number of hours a refugee child spends in detention: 10584. Average cost of keeping a child in an Offshore Processing Centre (Nauru) $400,000. Thanks to ChilOut for this data. Approximately 120-140 children, assessed as refugees, have been released into the Nauru community on 5 year visas. The Nauru Government has stated that they will never settle any refugee permanently on Nauru.