A Mossberg 22 rifle such as the Plinkster depending on the condition is worth around $150-200.
50-100
100-415 USD
They sell for about $300-$350.
Not sure what your question is. These are the successor to the Mossberg 152 rifles made in the '40s. The 352 K was made from 1957-59, value is about $150, depending on condition. The fold down forearm makes for a very steady hunting rifle. Parts are available from several sources, including havlinsales.com, and gunpartscorp.com.
10-125 USD or so
50-125 or so
50-175 usd
Impossible to answer without knowing if it is a rifle or shotgun.
100-300 USD depending on condition.
Depending on condition, between $100 and $200.
$100-$175, depending on condition