100-1000 depending on specifics, condition, box, papers, etc.
400
100-400 or so
100-300 USD or so
50-1000 USD or more depending on specifics
No such model. If it's a Single Six; 50-500 depending on specifics
100-300
100-300 USD
50-175 usd
What you describe was never made by Ruger
You need to contact Ruger. You may have a prototype
No way to find out.
No, there are .357 caliber bullets that are not magnum, but they are in the minority.