A. A central purchasing office, when trading in or exchanging used items of tangible personal property the estimated value of which exceeds five thousand dollars ($5,000) as part-payment on the procurement of new items of tangible personal property, shall:

(1)     have an independent appraisal made of the items to be traded in or exchanged. The appraisal shall be in writing, shall be made part of the procurement file and shall be a public record. The invitation for bids or request for proposals shall contain notice to prospective bidders or offerors of the description and specifications of the items to be traded in or exchanged, the appraised value of the items to be traded in or

exchanged and the location where the items to be traded in or exchanged may be inspected; or

(2)     have two written quotes for purchase of the property at a specified price. B. Award shall be based upon the net bid. Bidders or offerors shall compute their net bid or offer by deducting the appraised value or highest quote of the items to be traded in or exchanged from the gross bid or offer on the new items of tangible personal property to be procured. If an amount offered in trade is less than the appraised value or the highest quote but is found to be a fair reflection of the current market, representative of the condition of the items of tangible personal property and in the best interest of the agency, the bid or offer may be accepted. Documentation of the terms of acceptance shall be in writing, shall be made a part of the procurement file and shall be a public record.