Depends on condition. 10-160 USD or more is possible
100-1000 USD
Not enough information. No model information, No condition given. No estimate can be given.
175 USD or so
depending on age and condition, from between $250 and $450.
That's a very late Model 4, I suspect a take-down and probably a lever type? The value is GREATLY determined by condition, condition, and condition.
Which model in what condition?
Check the barrel and receiver
im almost certain its remmington Stevens Model 520
50-300 USD or so
1907-1929, 100-375 USD
200-275 USD
They are not marked, you can tell by the serial no. (well an looks ;)