Depends on the condition. Sunfires do depreciate in value pretty fast though. The kbb on a mint '99 sunfire coupe se is only around $3k. I personally would probably look up the cars selling on kbb, auto trader, and maybe even carfax to get an idea of what cars like yours are selling for in your area. This will give you a better idea of the street value of your car and see which route you would rather go. This of course is just my opinion.