Paid $1650 for NIB Lightning trap this year at Gun Show.
Personally I and many others wouldn't give you anything for a Broadway rib, its an idea that just didn't either work or was was so cosmetically ugly that no one wants them. The 32" barrels are unique though. A call to Glen Jensen, Browning Historian with serial number will yield some information if Browning imported the gun, if Browning did not import the gun, he will have no record.
If you can stand the gun cosmetically and plan to use it, $2500 may be OK but if you want to purchase for value, no.-Dick