SDCL § 5-18C-7: Municipal garbage disposal contracts and supply contracts.

For any contracts entered into pursuant to § 9-32-11 or for any supply contract, any local government may include a procedure for adjusting prices to meet changing market conditions not within the control of the vendor. The adjustments may not result in increases in the profit of the vendor, and shall be supported by written justification filed with the purchasing agent of the unit of local government.