Money shall be appropriated from the general fund in an amount to be determined from time to time by the legislature to facilitate such work. Accounting of all costs and expenses of the surveys shall be made to the municipal corporation by the director periodically and a final accounting shall be made upon patent of the land to the municipal corporation. Costs and expenses chargeable to the city shall include the actual amount expended for the survey and a reasonable allocation of overhead, travel, and equipment expense. The total amount of costs and expenses shall be repaid to the fund through the director by the municipal corporation for whom the survey was made, with interest at six percent a year from the date of patent. The actual cost of survey of each interior subdivision shall be determined by the director. For tracts conveyed to a preference right holder, the state shall be reimbursed by the municipal corporation in the amount of the survey costs of that tract as determined by the director within 30 days after the transfer of each tract. For tracts conveyed, leased, or otherwise disposed of by the municipal corporation, the fund shall be reimbursed by the municipal corporation in an amount equal to 90 percent of the gross proceeds of the sale, lease, or other disposal of each tract until the total amount of the costs and expenses of the survey, with interest, due the state is paid. The total amount, with interest, shall be reimbursed to the state within five years from the date of patent.