What is this gun worth? Please help me out

I might do a trade with a guy, I just don't know what his gun is worth. He has a remington 11-87 premier that has less than 2 cases through it. Gun is very clean and just sits in his safe. Said he bought it in 2005. He sent me pics and the gun looks beautiful. it has screw in chokes and has a 28" barrel. He says the gun has never jammed once and is well taken care of. Before I make him an offer or a trade, what would this gun be worth? Thanks for the help

Also if anybody knows how much this gun would of been NEW that will help alot as well

I sold a brand new one in the box on this forum about 3 years ago for $550 I think. At that time the gun was around $700 new.

Looking on gun trader I would say about between 500 and 575. Times are kind of tough right now in gun sales. it's a good time to buy.