It has probably more to do with getting a importer to take that much of a punt. He/she would have to, find them, buy them, ship them, quarantine them, pay for all that, then find a market for them, and at $800-$1000 retail for a probable non sexable juvinile they aren't going to fly out the door.
Mr Pleco is right in that our best hope for seeing these fish in shops is getting local stock breeding.