Maybe your concern shouldn't be how much the car is worth, but how much will it cost to get someone to take it away!!!!!
There are some 2+2s currently advertised on car sales for mid to high teens ( Some very ordinary cars I might add, what are they thinking?), and I gather because of this some people form the impression even the poorest example is worth $5000.
How much is your car worth? I think you know it's value, but you are hoping someone will tell you it is worth a lot more.