About $400.
10-100 usd
50-450 usd
You will have to provide a caliber, type of action and barrel length along with overall condition.
The worth is $539
'ctg' cartridge
10-1000 USD or more depending on specifics.
50-500 USD depending on specifics.
50- 250 usd
Cartridge
100-250 or so
50-1000 USD depending on specifics.