Aluminum raingutters are the obvious choice for the typical home owner looking to control rain water.
They are relatively inexpensive, prefinished in a variety of colors and quick to install.
Generally, there is no hard and fast price per foot. All contractors charge on a sliding scale with factors such as difficulty, travel and materials required. Most gutter companies offer free written estimates. A nice front door usually exceeds the cost of a modern seamless gutter system for your whole house.