I
listed my Sun City home for sale to move to Utah, but an investor buyer offered the full asking price of $420,000 and I accepted. However, after experiencing disagreements with my son's wife, I no longer want to relocate. My listing agent and I met with the investor buyer and his agent at Starbucks, where I proposed canceling the contract for a payment of $25,000. The investor buyer agreed, and we all seemed to have reached an understanding.

    But just an hour later, my agent called to inform me that the investor buyer had changed his mind, claiming our verbal agreement was unenforceable and demanding $75,000 to cancel the purchase contract. Is this a valid claim?