depends on the model
$500
The going rate for a browning model 870 shotgun is usually $499-$599 depending on the dealer. The price depends on the gauge desired and shipping costs.
How much a used Browning modle 870 shotgun costs can vary. The condition of the shotgun is one factor that impacts the cost. One can expect to pay close to $600 for one in good condition.
Your rifle was manufactured in 1979 [RN}. The 117 designates it as a BBR model number [pre-"A"bolt] The BBR was manufactured from 1978 thru 1984, When the "A" bolt was introduced. They are a very well built gun, and according to Browning, the cost of production was their demise.
I think about $650 if it is the lower field grade. That is about what it cost new. I bought one in about 1989 and still have it.
cost
You will have to call Browning to find out. To many variables.
100-1000 USD or so
50-1000 usd
The cost of a 257 Roberts by Browning will depend on the condition of the rifle. Prices range from $850 to $1,175.00.
@ 1000 USD