Hunting Creek Fisheries, Thurmont MD.
Only have them very early spring and then again in the early fall, very expensive. They only can breed 20,000-40,000 and they ship worldwide.
http://www.huntingcreekfisheries.com/Many of what they sell as midnight blue shubunkins have blotches of orange, red. I don't buy those. Some of the ones I bought 3-4 years ago are entirely black. The last few years the owner helped me pick out the best patterns. Some of the ones I bought were just below the quality they kept for breeders.
I drive down one hour, hand pick the ones I want. They bag and box them up like they are going to ship them and I put them in my car. I like talking to the owner - it's a very interesting business. Spring fed creeks flow under the building in which they have their holding tanks.
My pond is too small for koi to thrive, so my midnight shubunkins and sarassa comets are my pets.
If I had more land, I would put in a smaller pond for just sarassa comets and make my current pond a midnight blue shubunkin pond only!