We are currently building our house, and I can tell you that here in my area at least, metal roofs are much higher priced than a comparable shingle roof. The two quotes we got were for $14,000 and $17,000 more than the price of a shingle roof/w3tcompact/icons/shocked.gif. This was for a galvalume standing seam roof. We do have a fairly large roof, with 8-12 and 12-12 pitch, but it sure seemed like alot more than the $4000 to do the roof in shingles (and nice 30 year raised profile shingles at that). My wife really likes the look of the metal roof, but for us, the cost was just too much to justify.