Notwithstanding any provisions of this chapter for the sale of surplus personal property in the open market or any auction, the purchasing officer may trade in surplus personal property with an amount he determines to be reasonable, to be allowed toward the purchase of a similar type of personal property. Typical situations where this might apply might be in the disposal of used motor vehicles and other machinery and equipment of which trade-ins are commonly permitted by the manufacturer. (Ord. 88-16 Art. 2 § 19, 1988)