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.
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.
It does shed rain and snow shed more easily with the greater slope.
If they get damaged shingles are considerably easier to repair than metal.
It has a lower profile than the skillion or gable so may be more suitable to some neighborhoods.
In the past people used shed roofs exclusively for their garden sheds and garages.
Granted they also get damaged more easily.
A simple roof to construct but slightly more expensive than the skillion due to the lower slope needing waterproofing.
Pooling water on a roof can cause leaks and other damage.
Since a shed roof generally has a much steeper slope it usually lets the water roll right down it and over the edge.