I view the value of a masters in management in Canada as equivalent to a second bachelors degree. It works for domestic students who might be transitioning from another major (e.g. biology/history to business). However, for international students, who need an edge to get into the job market, it has less value because it is "generic" and does not provide the highly specialized education that makes you attractive to employers.
Just as an example, UBC Sauder (a really good school) has a Masters in Management. https://www.sauder.ubc.ca/programs/masters-degrees/ubc-mm
The average graduate salary for that MM program is $44,439. That is a really low salary. An average bachelors degree grad majoring in a quantitative field like CS or Math would have much higher salaries than that.
In terms of bang for the buck, the better option is to pursue a masters in a more specialized field like finance, analytics or business intelligence.