The value all depends on the condition of the weapon... brand new they can run somewhere around $750-$850 Then depending on the condition the value starts to go down. I have seen them even as low as $300
50-350 usd
Ruger uses a model number, such as 0804, but the suggested retail price of a new Super Blackhawk stainless 44 Mag is $829.
Depending on WHICH new model (Blackhawk or Redhawk) and condition, $200-$400.
Ruger's website has extensive sn data you can access.
100-500
$500-$700, depending on exact model and condition.
100-1000 depending on specifics
100-450 or so
25-200
50-400 usd
44 magnum
50-500 USD depending on specifics