[Adopted 5-24-2005 by Ord. No. 151; amended in its entirety 12-19-2012 by Ord. No. 197]
A. 
Comparative prices shall be obtained for the purchase or sale in an amount not in excess of $5,000 of all materials, supplies and public improvements, except:
1. 
In the employment of professional services.
2. 
When the City Manager shall determine that no advantage to the City would result.
B. 
For purchases in excess of $5,000, sealed bids shall be obtained and shall be approved by the City Council, except that where the City Council shall determine that the public interest will be best served by joint purchase with or purchase from another unit of government.
C. 
Any contract or agreement in an amount of $10,000 or more, made with form or terms other than the standard City purchase order form, shall, before execution, be submitted to the attorney and his opinion obtained with respect to its form and legality.
D. 
Before any contract, agreement, or purchase order which obligates the City to pay an amount in excess of $2,500 is executed, the Treasurer of the City shall first verify that a budgeted appropriation has been made for the payment thereof, or that sufficient funds will be available if it be for a purpose being financed by the issuance of bonds, by special assessments, or for some other purpose being chargeable to a budget appropriation.