Transportation is also a major factor, given the need to get materials from suppliers to the construction site. (sciencebasedtargets.org)
What a deal, I couldn't get the material for that cheap and the material seems the same to me. (theinspiredroom.net)
Its design allows you to spend less time trying to get the materials in the ideal cutting position and more time doing the actual cutting. (geekwrapped.com)