In East coast tri state area the 2000 S70 goes for about $11,700 on the dealer auction. That car should have about 44,000 miles. The optional equipment will raise or lower the price. Since, your car is under 30k the price theoretically should be higher. The average loan on 2000 s70 is about 15,500. Also keep in mind that right now there is 3000 manufacturer to dealer incentive for new s60.
I have just bought on the auction 2000 s70 GLT SE with about 56,000 miles on it for $12,100 plus dealers fees, plus auction fees. The dealers in NY want about 18,000 and provide extended warranty till 100,000 miles and I think another 3 or so years. That kind of warranty on the internet goes for about 2,000 to 2,750 if you buy it. The only thing that I dont know what is covered exactly and if it is only good at the dealer, since we know how expesive they are.
I was told to be very afraid of cars from FL due to high salt+moisture content in the air.
I am just trying to help here so