where to buy live rock

[BMW Rider]

I'm in the process of building a new tank, a custom 125 gallon tank that I'm building in to my basement. I have decided I want it to be a FOWLR system. I may eventually graduate it up to a full reef tank someday, but for now I don't have the experience or the time to dedicate to that.

I have been looking around for sources of live rock locally, but for the 100 -150 lbs I"d like to get the prices are steep. Is there a good source for this amount of rock locally, or possibly an online source. I'd like to get some larger pieces for the base too and most of what I have seen seems small.