I bought this from KEH, I was planning on using it with my Mamiya system but the truth is I'm too lazy to deal with flash and film. If I put batteries in this, it powers up, takes a long time to get a red light on the full power setting, pops up very quickly on the low power setting. That seems about how I would imagine it because I'm guessing this puts out a big bang. I've never used it, so can't really know if it is fully functional but it appears to be. Comes with the screw on attachment thingy and a PC cord.
Not too much to say.
$45 + $8 S&H