As so many of us have experienced, what a Volvo is worth is how much it sells for, and sdepending on where it is located and the various specific parameters of the car itself, the price of any given 240 can range from a few hunderd to many thousands of dollars. For example, try finding a nice 245, late 80's, with a stick. On the East Coast they can sell for $1500-2000 or so. The same car on the West coast is difficult to find and can sell for $1000 more.
But there are wide exceptions to this. Just moments ago, the following car sold on eBay:
1993 Volvo 240 Miles: 68,810