Depending on condition, 75-175 USD.
100 dollars
10-200 USD or so
$200-$300, depending on exact model and condition.
100-300 USD or so
It is about 250-350 used depending on condition. Around 550 New.
Sturm Ruger still makes magazines for that pistol. They are the same ones used in their MK I variant and have a 9 round capacity. The subsequent variants, the MK II and MK III . They can be purchased on-line at the Sturm Ruger website, and are commonly available at gun shops.
75-150 or so
100-400
very little market for ruger auto pistols, i would estimate 320 dollars or so depending on condition
100-300
Will depend on the exact model, barrel, sights, and condition. A well used Standard Automatic with basic barrel and sights might sell for $100, a higher end Mk II with extended heavy fluted bbl and target sights $350.
My grandfather's pistol used in ww1