It is tough to do this without seeing the car or at least pictures, color, interior, etc.
From what I have observed of ASKING PRICES, this car is in what is sort of a transition zone. Your basic presentable 107 starts out at about $5000 with 150K miles and climbs to about $12000 where you start to get very nice cars with around 75K miles. Then as mileage decreases, you head for the mid-teen$ at 35K-50K. After that, you get the really low mileage cars all the up into the $30K range.
So at 97K on a very nice example, $7500 - $10000 depending on originality, color, leather, and local market conditions.
There are a lot of nice cars around, so don't be afraid to pass if you don't feel good about the price.
Falls Church VA
'66 200, '66 230SL, '96 SL500. Sold: '81 380SL, '86 300E, '72 250C, '95 C220, 3 '84 280SL's '90 420SEL, '72 280SE, '73 280C, '78 280SE, '70 280SL, '77 450SL, '85 380SL, '87 560SL, '85 380SL, '72 350SL, '96 S500 Coupe