S.C. Code Ann. § 37-2-504

(1) Within ten days after a notice of cancellation has been received by the seller or an offer to purchase has been otherwise revoked, the seller shall tender to the buyer any payments made by the buyer, any note or other evidence of indebtedness, and any goods traded in. A provision permitting the seller to keep all or any part of any goods traded in, payment, note, or evidence of indebtedness is in violation of this section and unenforceable. (2) If the down payment includes goods traded in, the goods shall be tendered in substantially as good condition as when received by the seller. If the seller fails to tender the goods as provided by this section, the buyer may elect to recover an amount equal to the trade-in allowance stated in the agreement. (3) Until the seller has complied with the obligations imposed by this section the buyer may retain possession of goods delivered to him by the seller and has a lien on the goods in his possession or control for any recovery to which he is entitled.