a 1998 saturn sl2 is probably worht somewhere around three thousand dollars depending on the condtion and mileage. if it is in good shape and low miles you may get closer to four thousand for it.
It depends mainly on how many miles you have on the car and how the shape of the car is. If you have low miles and the car is in mint condition you could around two thousand for the car. If it has high miles and is all beat up you will get less than a grand.