$50-$100
Pi Squared
50-200 usd
Could range from 100-10000 USD
$150
20-80 USD or so
Impossible to do without clear, closeup photos. Seek the services of a professional appraiser.
10-1000 USD depending on specifics
100-300 USD
10-100 USD or so
Most likely a copy of a S&W. Nominal value
50-400 usd
about $250 max