the condition is far more important than the hours imo. if there's no scratches, visible defects(including ir), or other cosmetic issues, that price seems pretty fair(doesn't mean you can't try for less).
the last I saw the zt60's listed for locally was around 3k for the 65. they were on clearance about 2months ago, and haven't been available for awhile now. the normal selling price here was just under 5k, so that's a heavy discount for us.
now if the condition is poor. if there's IR, or scratches on the screen. then it's a decision of whether or not it's even worth buying. if the IR looks like it could be removed that's one thing, but I wouldn't bet 2900 bux on it.