Are you looking for real live rock or the fake stuff? Real stuff you can probably get from fellow reefers for much better prices than from an LFS (Become a member today!). I am using 90% fake rock from AO for my new build and got some amazing brank rock from Trop.
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Im using base rock that was seeded with live rock. I got all of mine from http://www.reefrocks.net/ because he will pretty much help you choose the rock layout that you want for your tank and if you want take pictures and send it back to you so you can approve it. His prices were also the best at the time I got mine.
I have about 40 lbs (3 medium/large pieces) of rock I'm getting rid of pretty damn cheap. I am changing one of my tanks from reef to FOWLR & don't want the large white base rocks any more. They were just starting to purple up when I took them out & I have had them in circulating salt water for about a week. Let me know if you're interested!