it is worth ..............$$$$
Yes, Ruger made them
50-200
Ruger.
$150-$200, depending on exact model and condition.
Depending on what variant, new or used, etc.., it can range from 75-300 USD
Ruger's web site has extensive sn data.
Depends on what caused the jam.
Check the receiver and barrel
75-300
$50 - $250, depending on new or used, specific model, and overall condition.
50-225 usd