Up to around $2.00/lb for porous pieces with custom holes. depends on the pieces, I buy in quantity, and more often than the end user so I get a wholesale price. Its not dirt cheap but its cheaper and more enviromentally friendly than filling your whole tank with wild harvested liverock. And its nice to put a nice shaped piece of tufa rock thats 4'x3'x2'
and in 6 months it looks like any other live rock. Imagine shipping a 300lb rock from Fiji, end cost would probably work out to $25.00+/lb.