Picassos can only be found through lfs's. I waited 8-10 months to get mine. People only once in a great while sell them online and then usually only a pair. If you'd like info where I got my onyx, PM me. I can also tell you where I got my Picasso's, but there will be a very long wait...
Just for a little info, I got my two onyx as singles(separated for breeding morphs) for less than you can get one of Rod's onyx and they are not inbreeds(if I was breeding them together) as they were wild caught. Treated for any diseases before they reached me. Great guy I got them from.