To check the quality and power of rocks, you need tools that test rocks. People build things with these tools, mine, and study rocks with them. The rock testing machine price to check the quality and power of rocks, you need tools that test rocks. People build things with these tools, mine, and study rocks with them. The rock testing machine price can change for several reasons. First, how much the machine can do is very important. Usually, machines that can carry more weight cost more. Second, the name or manufacturer of the rock testing machine manufacturer also matters.