100-500 USD depending on condition.
I don't think there is an invector plus model. Invector Plus is the choke system Browning uses on newer shotguns.
Its about $550 @ basspro
0 100-1000 USD and up depending on specifics
You will have to call Browning to find out.
Made in 1996
The Invector Plus choke tubes were first introduced in the 1989 Browning Catalog which was published in October 1988. Keep in mind that the Invector was already standard on most shotguns and the Invector Plus was slowing being made available to many models. The Invector Plus choke tube system was available first on BT-99 models and then the BPS and high grade doubles.
Yes, all Browning Invector and invector plus barrels can shoot steel shot.
Need date of mfg, serial number, and condition to price most any firearm.
Depending on condition $300-$450
Best bet is to have it examined by a good gunsmith.
Look at the choke tubes.
Send it to a Browning authorized repair center.