There are many things to consider. Age, condition, scope... Say $3-600.
0-500 USD depending on exact configuration and condition.
The value of a firearm is based on the exact make, model, and condition. You only gave us ONE of the THREE items we need.
100-1000usd
100-500 USD
It depends on the model
Retail, about $900 for a Hunter model and $1000 for a Stainless Stalker.
500-800
~$189 to ~$229
Impossible to do with just the serial number.
Need a detailed description
The W818878 is not recognized. 70B30095 is a number for a Browning Lever action .22 rifle. Use the link to find value