Up for sale is a Turtle TTL flash trigger for Olympus and Panasonic cameras. This works with Inon, Sea & Sea, Ikelite strobes, among others, providing TTL and manual flash exposure. See Turtle's website for additional applications. http://trt-electronics.com
The unit works fine, but will require some gluing or a new LED adapter ($38 from TRT in the UK). $225 includes PayPal fees, and free shipping the United States.