buying online is more of a hassle than its worth anyway. your best bet is to get in contact with a few LFS near you and let them know what youre looking for. More than likely they will not have it on hand, because theyre not a very well known species (most lfs only bring in what sells), but if they know youre looking for them, then they can contact their suppliers and let you know when they get them in.
be patient. its worth the wait.
in the meantime, just make sure you have a big enough tank, cycled and ready for them when they come in.