Except for reasonable expenses incurred in realizing on a security interest, the agreement with respect to a consumer credit sale may not provide for any charges as a result of default by the buyer other than those authorized by this title. A provision in violation of this section is unenforceable.
Limitation on default charges
S.C. Code Ann. § 37-2-414, under Title 37, Chapter 2.
S.C. Code Ann. § 37-2-414