100-350 USD
Ruger's web site has a sn date function
No such Ruger exists. What you might have is a Ruger Super BlackHawk. 100-1000 USD or so depending on EXACT confgurationa, age, condidtion.
100-500 USD or so
There's no way to answer this question without knowing exactly what needs to be fixed.
200-400 USD
100-500
100-1000 USD depending on specifics
Ruger uses a model number, such as 0804, but the suggested retail price of a new Super Blackhawk stainless 44 Mag is $829.
100-1000 depending on specifics
Depending on EXACTLY what you have, it could range from a hundred or so to multiple thousands.
alot alot