I'm saving my cash for later. The 16'th of June there is a big camera auction in here Sweden, some 500-600 antique/collectible items, 35mm, medium format, large format etc. Last auction featured a G690 with chrome 100mm lens. The coming auction doesn't have any Fuji 690's, but it has two 617's.
http://www.lpfoto.se/swe/auktioner/aukt ... lla_sp.asp click on "text och bilder" or "pdf" to see the items.
It's a live auction so you have a sign with your number on that you raise when you want to bid. It is possible to make telephone bids as well as make prebids in written form.
I am in no way affiliated with this auction house. I'm just addicted to old cameras.