S.C. Code Ann. § 12-51-70: Default by successful bidder; readvertisement of property.

If the successful bidder fails to remit in legal tender within the time specified, the person officially charged with the collection of delinquent taxes shall cancel that bid and duly readvertise the same property for sale, in the same manner, on a subsequent delinquent tax sale date. The defaulting bidder is liable for no more than five hundred dollars damages upon default, which may be collected by suit by the person officially charged with the collection of delinquent taxes in the name of the taxing authority.