Md. Code, Commercial Law § 14–1105

(a) The seller may not increase the layaway price of the consumer goods sold under a layaway agreement.

(b) If, within 10 calendar days after the execution of a layaway agreement, the seller reduces the selling price of existing items in his stock or inventory identical to those being held for a buyer, the seller shall credit the buyer for the difference between the original layaway price and the reduced price.