Should you consider getting a corrugated metal roof? If it is galvanized, definitely the answer is yes. Rust won't be able to destroy it and with proper maintenance, this can last up to 50 years or more.
If you want to do your share in protecting the environment, you will be happy to know that it is recyclable. Once throw away, this can be melted and a new sheet can be used to roof another home.
Corrugated metal roofing is available in various colors. You can treat each sheet with different solutions like polymers to make them stronger and long lasting. Lower in cost compared to other types of roofing and better in quality, this is surely good value for your money.