Depends chiefly on the NRA rating as to its condition.
100-1000 without a more detailed description.
Between $150 - $600, depending on the exact model.
50-200 USD or so
Depending on exact model and condition, the Ruger autos are worth $100-300. Production dates are available at the Ruger website, under Customer Service, Historical Data.
$100-$250, dpending on condition.
50-200 USD
50-400 USD or so
50-500 usd
Depends on who did the engraving, and if the pistol has ever been fired
No such model. There was a SP101; 100-300
75-260 or so
$100-$250, depending on condition