This occurs when a vehicle is listed online, with the text description giving one price, say, $12,000, while the photo attached has a different one written on it, say $8,500.
When asked about it, the crook says the price is $8,500, explaining it was reduced for some sympathy reason, such as a recent death in the family. The victim pays thinking he got a hell of a deal, but never receives the car.
How to avoid: buy it only if you can go and pick it up in person. Paying upfront thousands of dollars for something you can’t try is something you should never do.