Whenever any real property, or any interest therein, owned by the city is disposed of by negotiated sale or exchange, no service fee for such sale or exchange shall be charged by the city; provided that where the proceeds from such negotiated sale or exchange do not inure to the exclusive use of the city, the purchaser thereof shall be charged with service fees, in accordance with the schedule provided in § 6-10.1.
(Sec. 5-14.1, R.O. 1978 (1983 Ed.)) (1990 Code, Ch. 6, Art. 10, § 6-10.2)