The owner is attached to those parts and has priced them as such, not way over market, but the brakes are lacking hoods, don't know about the cables, housing and clips, if ALL parts were in the box, then about right, but too much otherwise.

Patent years can make a difference to many for recreation of an old bike...

This is a sale best done locally, the no returns is a turn off unless one can inspect the parts in person, the chains for example, Regina Oro G.S. Corsa chains with the brass outer plates that have the radius/bevels are worth every dollar asked, if the later Oro, with the same side plates as used on the Extra chain, thumbs down.