NAvy Luger Price question...

[glock30]

I am not certain if this is even in the right thread but here it goes. The gunshop out here has a navy Luger, that is a 6 inch barrel, standard sights so the reat toggle link might not be real, and this gun is a disaster to look at, it is totally rust brown and not a spec of bluing is present, I mean this thing is bad.NO pits, just rust brown everywhere rounded edges and I would think it a 300 dollar gun if not less, this nut wants 650, what do you think? It is just a hugfe pile of rust, parts do work though. no mainspring etc, sear I think is damaged.