Immigration laws, or gets an opportunity to update knowledge on regular and ongoing basis. What you get is from an unauthorized immigration representative is the information available on the Internet something that you are already may be aware of!
The Government of Canada and the related Canada Immigration office will not deal with non-authorized representatives who are paid a consulting fee for their service. This key benefit and value addition come your way when you deal with an authorized immigration representative, or with a company that offers you the services of such an authorized representative. Much more importantly, such a representative has adequate knowledge of immigration laws to deal effectively with immigration agencies, on your behalf and can represent you effectively in addressing Canada Immigration Office queries, refusal and rebuttals.