Fair price for Linn Kaber speakers/Passive

Going to audition a pair of Linn Kaber ls500 speakers/Passive tommorow and was wondering in excellent condition light oak finish what's a fair price? Dealer also has a set of Dunlevy sc4 speakers as well both sets are used in excellent condition.
Dealer is asking 800.00 firm on for the Linn Kaber's and 1,400.00 for the Dunlevy's

My concern is that both sets are in perfect condition but both are pretty old and I'm not sure if the prices are fair market value. Please give me some insight.

This is not a thread on what speakers i should buy for my current budget these are my best options locally with out paying an arm and a leg for shipping.