You know I have to say the saying still is in fish offered by pic. If you havent seen the fish in person buyer beware. I have a couple of nice Sankes I have gotten from their auction site, have I gotten burned? YES...Will I ever do it again? NO. Atleast, in my area there are enough dealers around to help me find a fish, I really dont need to drive more than 15miles to hit a Koi Shop.
In my area of San Jose:
Genki Nishikigoi (High Quality Koi from all over Japan)
Champion Nishikigoi (Has Everything, Biggest Koi Shop in NorCal)
Tse Koi (Has Everything, Second Biggest Koi Shop in NorCal)
Cherry Hill Koi (Greg sells Koi from Niigata to goldfish)
Fancy Koi Outlet (Specializing in Koi Supplies)
TD Koi (Koi from Niigata to Landscaping stuff)
If this isnt a Koi lover area then I dont know what to say...

I really dont need to drive outside of the general area, unless I am looking for Goldfish in San Francisco.