Depends on model, gauge and condition of course. Some were Stevens guns, some AYA, some Laurona, etc. You need to provide more info.
what is the model 101.7 in 20 gauge worth
50-200
50-200
100-300 USD
50-100 USD
50-200 USD or so
300 given the info provided
what is 20 gauge shotgun with kk worth
311A. Value around $200-$250.
the left barrel shoots a tighter pattern than the right side
They are very inexpensive, however the price depends on the model. You can expect to pay around $250 for a new Cai in .410 gauge.
between 500 and 5000 depending condition and grade