S.C. Code § 37-2-411
With respect to a consumer credit sale or consumer lease, the seller or lessor may not give or offer to give a rebate or discount or otherwise pay or offer to pay value to the consumer as an inducement for a sale or lease for the consumer giving to the seller or lessor the names of prospective buyers or lessees, or otherwise aiding the seller or lessor in making a sale or lease to another person, if the earning of the rebate, discount or other value is contingent upon the occurrence of an event after the time the consumer agrees to buy or lease. If a consumer is induced by a violation of this section to enter into a consumer credit sale or consumer lease, the agreement is unenforceable by the seller or lessor and the consumer, at his option, may rescind the agreement or retain the property delivered and the benefit of any services performed, without any obligation to pay for them. A sale or lease that would be a referral sale or lease if credit were extended by the seller or lessor is nonetheless so because the property or services are paid for in whole or in part by use of a credit card or by a consumer loan with respect to which the lender is subject to claims and defenses arising from the sale or lease (Section 37-3-410 ), and the consumer has the same rights against the card issuer or lender that he has against the seller or lessor under this section.
S.C. Code § 37-2-411