Taxpayers have handed over £25m to date to fund the three ongoing Tribunals of Inquiry.
The most expensive has been the Planning and Payments Tribunal at Dublin Castle.
It already has a bill of £11m and it's thought the Inquiry's work is less than half done.
The Lindsay Tribunal into the contamination of blood products has hit £7.25m, with the Moriarty Tribunal at £6m.
By far the highest expense has been legal costs.