The bigger question becomes.....do you have personal representation?
Anyone listing their property for sale through a real estate brokerage would enter into an agreement that usually identifies the agent as the main contact source. So for a buyer to have direct contact with the owner is highly unusual.
There are a variety of other arrangements that include discounted services that leave the actual selling in the hands of the owner.
Your best course of action would likely be to be woring via a local real estate professional that will look out for your personal well being alone.......