S.C. Code Ann. § 33-47-1120

The bylaws and the marketing contract may fix, as liquidated damages, specific sums to be paid by the member or stockholder to the association upon the breach by him of any provision of the marketing contract regarding the sale or delivery or withholding of products and may further provide that the member will pay all costs, premiums for bonds, expenses and fees in case any action is brought upon the contract by the association. Any such provisions shall be valid and enforceable in the courts of this State.