Where To Get Cheap Live Rock / Extremely Cheap Dead Base Rock?

So, with my current planning i've been doing on adding a 6ft tank and a secondary sump to my overall system, i've been thinking about what i'm going to be doing with live rock..

I figured i had a fair amount of dead rock, and i have a fair bit in my sump, but after making my sweet base rock pillar.. i really doubt i'll have enough for what i want to do with the 6ft. I can't really afford to be forking out $18 a kilo on live rock, and my tank turns base rock to live rock very quickly with a really nice algae coverage.

So what im asking is, does anyone know of a local supplier for base rock that is cheap? Or where can i find it?

Bump. Anyone?

Nevermind. I just found out Age Of Aquariums sells 18.2kg, 20kg and 23kg boxes of dead rock for around $140ish.

Ben does that as well,i had no idea.

I thought he only did dry goods,smart boy that Ben

Wouldn't dead rock technically be "dry goods" anyway