Good question. I'm always on the lookout to see which vendors and websites have them on their list. Might try contacting Mark at Discus Origins. He occasionally has access to some. Also, recently saw Gerald Lofstead had some listed at 2" on Aquabid.
Jeff had some a while back but now he's only got wild adults at 7 - 8". I don't see them on any of the lists I frequent. They pop up occasionally, you just have to check regularly.
Thanks all. I ended up finding them through a new local store here in Burbank called Ultragem Fish and Coral. The guy I worked with put me down on a list to find them and a few weeks later text me while he was with his whole seller to make sure I got exactly what I wanted. If you are in this area and looking I suggest you take a look. Their store is small but it seems like they can get everything you need at a reasonable price.