What is the average rate(s) for installing Pavestone. I am building 2 beds only 2 high. The first layer is 60 linear ft. I need around 130 blocks (4" high x 12" wide[at the front]). Should just charge 2x the cost? I dont need quotes for prep, I already know about how long that will take. I need to price this job, ASAP. Thanks guys!