If a seller tells a broker, "If you bring me a buyer, I will pay you a commission," what type of agreement does the broker MOST likely have with the seller?

In this scenario, the correct agreement type is a unilateral open listing. This type of listing indicates that the seller has authorized multiple brokers to find a buyer and has promised to pay a commission only to the broker who successfully brings a buyer to the transaction. The seller retains the right to sell the property themselves without owing any commission to the brokers, which emphasizes the unilateral nature of the agreement—only one party (the seller) is bound by the terms.

The other types of agreements mentioned would not accurately describe this situation. A bilateral exclusive right-to-sell listing involves a commitment from the seller to pay a specific broker a commission regardless of who brings the buyer, which is not the case here. In a unilateral exclusive agency listing, the seller agrees to pay one broker but also has the right to sell the property independently, yet this agreement typically still grants some exclusivity to the broker. An exclusive buyer representation agreement is focused on the relationship between the broker and the buyer, rather than the seller’s commitment about paying commission. Thus, the nature of the seller's statement aligns best with the concept of a unilateral open listing.