The only place I have ever found them is from a vendor in California, which is a long haul for these little guys from there to the east coast where I live. Here's there link: http://www.liveaquaria.com/product/p...62&pcatid=1562
Sorry if this is all old news to you though! They don't seem overly common.
Right! I've seen them in a friends tank once before and I had fish envy! Have you tried putting out adds in your local pet stores? Maybe another fish enthusiast near you might have a local contact for them :))) my local pet stores have bulletin boards just for purposes like this!