I have 2 Koi that have grown to large for my current pond. They are both appx 16" in length, were purchase a local "traditional" Koi farm (http://www.enkoi.com/) and need a new home. One is all white with a bright orange spot on it's head (Kohaku) and the other is all white with spaced black scales along side it's spine (Kujaku).
As you'll see on the site above these fish retail for $575 each. Make me an offer and you must be local for pickup. Email me for pictures or inquires.