Great price if it's in good condition.
I think a couple of 50+'ers ride Orbeas, but I see them in my LBS all the time and, yes, I think $5k to $6k would be the price for that bike in that condition.
You can go to the Orbea website - they have a "custom order" section of their site that allows you to configure a bike w/a Campy group....w/a Campy record group I would imagine you're well north of $5k.