According to the New Jersey Real Estate Commission's advertising rules, a broker is permitted to offer rebates or free/discounted items. However, a critical condition is that the offering cannot be contingent upon the consumer entering into any contract or agreement, such as a listing agreement. In this scenario, the $100 gift certificate is only given to sellers who list their properties with the broker. This creates a prohibited contingency, making the promotion illegal under New Jersey license law. The law is designed to prevent inducements that could improperly influence a consumer's decision to enter into a brokerage relationship.

A. Time-limited promotions are not inherently illegal. The violation is the contingency of signing a listing agreement, not the fact that the offer is for a specific time period.

C. A rebate or gift to a principal in a transaction (the seller) is not considered compensation for brokerage activity. This rule applies to paying unlicensed individuals for performing licensed services.

D. While discrimination is illegal, this is not the primary legal reason for the prohibition in this context. The core violation is the structure of the promotion under specific real estate advertising regulations.

1. New Jersey Administrative Code, Title 11, Chapter 5, Subchapter 6.1(h): "A broker may provide to a consumer a rebate from the commission the broker receives... The payment of the rebate or the providing of the free or discounted product or service shall not be contingent upon the consumer entering into any contract, agreement or transaction." This rule directly prohibits the action described in the question.

2. New Jersey Statutes Annotated (N.J.S.A.) 45:15-17(l): This statute grants the New Jersey Real Estate Commission the authority to suspend or revoke a license for "...making any false promises or any substantial misrepresentation; or... (l) Procuring a license... by fraud, misrepresentation or deceit." The Commission interprets contingent offerings as a form of improper inducement under this authority, as codified in N.J.A.C. 11:5-6.1.

3. Rutgers Center for Real Estate, "New Jersey Real Estate Law and Practice" Course Module: In discussions on licensee conduct and advertising, the courseware emphasizes that while rebates to principals are legal, they cannot be used as an inducement contingent upon the signing of a listing or sale contract, citing N.J.A.C. 11:5-6.1(h) as the controlling regulation.