i see them on auction for around $500 all the time
50-350 USD or so
100-1000 depending on exactly what you have, condition, box, accessories, papers, etc..
ABOUT $200-$300, depending on condition, and WHICH version of the Blackhawk.
About $500.
75-400 or so
100-500 or so
The Blackhawk was not made in 22 LR. If you have one with "Blackhawk" on the frame, you need to call Ruger. There is an almost astronomical chance that you could have a factory experimental, but, I doubt it. More likely you have a Single Six of some type or maybe a Bear Cat. Any of the 22 revolvers can range from 50-400 depending on specifics.
100-400 or so
100-300 or so
Without a detailed description of your black hawks overall condition,I can only give a general value of between 200-375 dollars for your Ruger blackhawk.
RUGER PISTOLS ARE GOOD GUNS, ABOUT $600