Md. Code, Business Regulation § 8–503

(a) As an inducement to make a home improvement contract, a person may not promise or offer to pay to an owner any compensation or reward for obtaining or placing home improvement business with others.

(b) A contractor or salesperson may not offer, give, or pay to an owner a gift, bonus award, merchandise, trading stamps, or cash loan as an inducement to make a home improvement contract.

(c) To advertise or to promote sales, a contractor or salesperson may give to a prospective customer a tangible item if:

(1) the cost to the contractor or salesperson does not exceed $25;

(2) the gift is not contingent on making a home improvement contract; and

(3) the customer does not receive more than 1 item for 1 transaction.