I have an Olympus FL-36R flash available. I used it on my Panasonic GF1, but I no longer own a camera that can use this flash. Of course it's a great flash for the Oly's and I assume for the Panasonic GH series as well.
Flash works great; the flash and omnibounce looke nearly new with quite minimal scuffing.
$175 includes paypal and shipping.