Copper suits me fine also. Current price here is $975/square from the small roofers, more from the large ones. But that's over half labor. Not much skill necessary when the tools self-align.
Nice to know that I won't be up there re-roofing again.
Mark B., there're a lot of reasons I don't live in your neighborhood. Copper-roofed outbuildings work fine here. My house got even better, a green roof.