A dealer must pay for each item of secondhand personal property by check or by granting a credit toward the purchase of other merchandise from the dealer, except as permitted by regulation under method (3). (1981 L.M.C., ch. 27, § 1; 1983 L.M.C., ch. 28, § 1; 1984 L.M.C., ch. 24, § 45A; 1984 L.M.C., ch. 27, § 29; 2009 L.M.C., ch. 6, § 1; 2014 L.M.C., ch. 30, § 1.)