Lots of built up snow adds extra weight to the roof that can also cause damage so shedding water and snow more efficiently is a definite advantage.
Shed roof advantages and disadvantages.
Yes shed roofs are cost effective options because of their simplicity.
Shingles have a lower initial cost.
It does shed rain and snow shed more easily with the greater slope.
It has a lower profile than the skillion or gable so may be more suitable to some neighborhoods.
If they get damaged shingles are considerably easier to repair than metal.
Pooling water on a roof can cause leaks and other damage.
A simple roof to construct but slightly more expensive than the skillion due to the lower slope needing waterproofing.
A metal roof is a 100 upgrade easy to repair.
Since a shed roof generally has a much steeper slope it usually lets the water roll right down it and over the edge.
A basic roofing design with only one slope is easier and less time consuming to work on for contractors and this translates into lower roofing construction costs.