Have you checked out marinefarmers.com? He usually carries rare softies. He has a pink stereonepthea in stock right now (but aren't pink stereonepthea's the same as the Koji Wada??). But sometimes he'll have the rare forms in stock as well--the yellow kind and the one they call the Mulberry.
I've ordered frags before, and yes, they came healthy, but a lot of $$$ for a tiny softy frag!