Ya, live rock is REALLY hard to come by now. All the wholesalers are out because the govts overseas are really cracking down on the bans in place with harvesting live rock from many places, biggest one being Fiji. At least that is what I have heard from several wholesalers first hand down in LA.
http://www.fijitimes.com/story.aspx?id=106439
http://www.fijitimes.com/story.aspx?id=106439