1987 mercedes 560 sec

I have found one of these cars and it has been sitting for around three to four years and has had some abuse in the past but I would like to get it for cheap if I can, supposedly either the tranny, or engine gave up the ghost.....

What would be a good asking price.....the paint is in bad condition and the car is just really neglected looking....

I live in Oregon, but the paper plates on it are from California....

Thomas