Section 73. The petitioner, at the time of filing his petition, shall deposit with the recorder a sum sufficient to cover the costs of the proceedings as estimated by the court, and the fees chargeable by the court as the case proceeds shall be computed in accordance with section thirty-nine of chapter two hundred and sixty-two, so far as applicable, except that the charge for examination of title shall be the actual amount allowed the title examiner by the court. The money paid into court as aforesaid by the petitioner shall be disbursed directly by the recorder for necessary expenses incurred, and the balance of fees chargeable in each finished case shall be paid over quarterly to the commonwealth.