Metal studs are popular for replacing 2x4s in walls. They have a lot of advantages over standard white pine. They're still more expensive, but $11 (metal) vs $

Metal studs are popular for replacing 2x4s in walls. They have a lot of advantages over standard white pine. They're still more expensive, but $11 (metal) vs $9 (WP) is less of a premium than the usual ~2x.