I know American Canyon as I traveled the 80 between Sacramento and San Francisco some years back. I played a round of golf off one of the exits in the hills there but can not remember the name. Anyway, find a REALTOR and ask about REO properties, Those are real and you have a reaql shot. Best advice. Good luck.
You are correct in questioning this information......Additional information would be necessary to assist you with specific details but if this came directly from the MLS it is likely accurate. Any place else, proceed cautiously making sure your information is reliable.
You would be well advised to refer your search to a local real estate professional.
The price you see on 3rd party listing sites is usually the amount that the owner is behind in paying. It's not the actual price of the property. If the owner pays the amount due, he/she will be able to keep the property but if not, the property may go into foreclosure. Once foreclosed upon, it will be listed with an agent at market value.