S.C. Code Ann. § 57-21-130: Sale of bonds.

The bonds shall be sold by the governing body of the county at not less than par and accrued interest on sealed proposals after a publication of notice of sale one or more times in a newspaper designated by the governing body. The governing body shall reserve the right to reject all bids. In the event that all bids be rejected, it shall have the right to sell the bonds at private sale if a price in excess of the highest bid received in pursuance of the call for bids is obtainable or, in its discretion, to readvertise for sealed bids.