S.C. Code Ann. § 40-39-40: Unauthorized fees prohibited; violative pawn transaction ramifications.

(A) No pawnbroker may charge or collect any fees, costs, or assessments of any kind or nature other than those specifically allowed under this chapter.

(B) A person who makes a pawn transaction in violation of this chapter:

(1) may not collect, receive, or retain any interest or charges on the loan in violation of this chapter; and

(2) has no right to possess the pledged goods.