So there is a class of broker not specifically addressed here. Finding a listing on an internet based "board" such as Trulia we were then contacted by an individual who offered to show us the apartment. We accepted and signed a lease, paid deposits etc. Only then did the "individual" ask for his commission. We would not have signed the lease had we known that we owed him an extra $3000. He should, in my opinion, have declared the commission and had us sign to agree to the commitment prior to us signing the lease. We will agree to pay him whatever we agreed to in writing, which is nothing. In this case. He did not handle the transaction well and is becoming aggressive. His problem at this point as he should have been clear on the declaration of his fee. Any thoughts anyone?