For the original poster,
It is definitely unethical and not a very smart practice. It would be illegal if the agent was in collusion with a seller or broker who is offering a higher commission on specific properties.I really don’t understand an agents motivation to put such a condition on a buyer. I would definitely fire the person and perhaps make an inquiry to the local board.
Drunkle, to answer your question,which may in fact be rhetorical or faceatious one, a broker runs an office and all agents must hang their licenses under a broker. Brokers have supervisory obligations and in fact the broker is often the target of law suits when the agents do bad or dumb things. The last time I worked with an agent who was causing trouble I called his broker and asked him to get the agent out of the picture. The transaction was finished with the broker and a very qualified transaction coordinator. We never dealt with the chump agent again.
Yes SD R, he was from yor favorite brand name office, bringing me a buyer.