If it helps I looked for a nice one for over 4 months. I picked up my 97 960 with 66K miles in February for $9,995. Even at that price I'm thrilled with my purchase.
Other than two door panels (Wrinkles) and an oil leak due to a worn O-ring on the oil cooler those were the only repairs I needed to make on the car. The door panels were an option they were not that bad but I wanted the car to be as close to perfect as I can get it. When I was looking I found that cars in exceptional condition and low mileage bring top prices.
I found cars under 70K are still going for over $10K on average. Once you break the 80K mile area the prices seem to drop as fast as the mileage goes up.
If the car has over 100K don't pay more than $8,000 for it. Although I have only put on a little over 1300 miles since I acquired it I can say it is one of the nicest cars I have ever rode in. If it helps the techs and service writers at my dealer agree with the posters that the 95-98 960/S90 is the finest car Volvo has ever built. I have seen the bills at my dealer for routine maintenance and repairs on the FWD's and it isn't pretty. One tech made a comment last month that the S80 and S60 owners will be hard pressed to see 200K. Reason when I asked why, was the owners will have a hard time justifying the cost of maintenance needed to keep them on the road that long?