Immediately on May 10, 1993, this section becomes applicable to Jackson County. A special indexing fee of four dollars ($4) shall be paid to the county and collected by the judge of probate, with respect to each real property instrument and each personal property instrument that may be filed for record in the office of the judge of probate and for the recording of other instruments and documents in the probate office at the discretion of the judge of probate of the county. On and after that date, no instrument shall be received for record in the office of the judge of probate unless the special indexing fee of four dollars ($4) is paid. The special indexing fee shall be in addition to all other fees, taxes, and other charges required by law to be paid upon the filing for record of any real property instrument or personal property instrument and for the recording of other instruments and documents in the probate office in the discretion of the judge of probate of the county. The special index fee collected by the judge of probate and paid to the county, shall be deposited by the judge of probate to any bank in Jackson County and spent by the judge of probate at his or her discretion for the improvement of the office of the Judge of Probate of Jackson County. The fees collected under this section shall be controlled by the sole discretion of the judge of probate and shall be audited by the Department of Examiners of Public Accounts. The balance of index fees on deposit with the Jackson County Commission on May 10, 1993, shall be transferred to the index fee account of the judge of probate immediately after May 10, 1993.