Please help! Gun Value - 870 Wingmaster

[Mr. 16 gauge]

Saw quite a few over the weekend at various pawn shops and gun stores w/ used gun racks. The older guns with the better finishes were going for $250-$275; these were with plain barrels (w/ vent ribs, add about $15-20). All were 12 gauge.
Quite a common find in the used racks around here, and as skeet said, the newer "Express" models have caused prices to take a bit of a tumble. I have an express model that I use for waterfowling; bought it specifically for that purpose in mind, as I new it would get dunked, dinged, banged around, stepped on, muddy, ect. I put a synthetic stock on it after I found that the wood one swelled up horribly and changed my POI when I shot it. It still serves me well, and with a little TLC I think it will last many more seasons.