Section 6333 - Applicability and effect of subchapter(a)Security interest.--This subchapter does not prohibit the execution of an agreement between a buyer and seller whereby the seller retains a security interest in goods sold to the buyer until full payment has been made.(b) Allocation.--Section 6329(b) (relating to add-on sales) governs goods sold under an agreement under subsection (a).(c) Notes; third party rights.--An open-end credit agreement may not require or entail the execution of a note by the buyer that when separately negotiated will eliminate as to a third party a right of action or defense that the buyer may have against the seller.Added by P.L. 1081 2013 No. 98, § 4, eff. 11/27/2014.