I have a Braun 2000 F002 rechargable flash that I just discovered while cleaing out my cupboard. I'm not sure it's voltage would be safe on a digital camera but it probably could be fired remotely with a triggering device--I don't think it will fire wirelessly. I may have the brochure somewhere and will try to dig it up if anyone's interested. It worked well on my old Nikon FE film camera. I offer no guarantees with it.
I'd like $1000 for it but would settle for a promise to give it a good home! For the thousand dollars I'll hand deliver it anywhere in Ontario. If it's for free, you pick up in Scarborugh, Ontario.