if you have a roof with few valleys and stange cuts, the metal roof might get a little cheaper, but not a lot. i lked to several places that sell the metal roofing, but don't install it, and they sure don't offer any guarantees like i hear folks here mentioning. kinda like a product i used once called onduline, or something like that, it had a lifetime guarantee against everything, well the company went out of business, and started up under a new name, and is now sold at lowes..it is junk..it fades, cracks and becomes very brittle..
heehaw