This is my 20th year in the real estate field. Occasionally, I find solid justification for buyer-broker agreements because the broker is so vulnerable without one.
About 8 years ago, I had a buyer involved in a lot split. There were many problems that took, literally, years to overcome. In the meantime, the seller died and the executor decided he didn't want to sell.
Attorneys for buyer and seller negotiated an agreement paying the buyer $30,000 to relinquish any claim to the property. I was told by the seller that any information regarding the arrangements had to come from the buyer's attorney.
The buyer maintained that he had no knowledge of what was transpiring between the attorneys and said he would let me know when he knew something further. About 4 or 5 months later, he revealed the facts about the settlement. I got a copy of the note and trust deed showing that he had signed the documents almost 6 months earlier.