The Home Rule Charter, Article Seven, Section 7.01(a), stipulates a threshold of $10,000 for competitive bidding of contracted services.
Written or telephonic price quotations from at least three qualified and responsible contractors must be requested for contracts less than the base amount of $10,000. A memorandum must be kept on file when fewer than three qualified contractors exist in the market area within which it is practicable to obtain quotations. A written record of telephonic price quotations must be made and must contain at least the date of the quotation, the name of the contractor and the contractor's representative, the construction, reconstruction, repair, maintenance or work that was the subject of the quotation and the price. Written price quotations, written records of telephonic price quotations and memoranda must be retained for a period of three years. Written price quotations as used throughout this section include electronic mail.
A. 
Sale of excess personal property shall be through the solicitation of competitive bids for individual or lots of items with an estimated fair market value in excess of $2,000.
B. 
For items or lots of items with an estimated fair market value of less than $2,000, Council shall, by resolution, adopt a procedure for the sale of surplus personal property. The approval of Council shall not be required for any individual sale that is made in conformity to the procedure.