You are getting bits and pieces about incorporating. Firstly, before you incorporate, make sure your net income is $75000 or more. Otherwise, incorporating will not be cost-effective for you. This is what I tell my clients.
The cost of incorporating is about $1500-2500 depending on the complexity of the company. Do not do this yourself. When clients see me with self-incorporations, it shows and there are lots of holes to fill thereafter. See a competent lawyer for this work.
Your accounting and tax filings greatly increase. In order to take advantage of the benefits of your incorporation, you have to see a chartered accountant. The cost of filing your year-end work and the respective tax returns will start from $2000. If you require a review engagement for financing purposes, this will increase substantially. An audited statement is something that you don't even want to think about.
Incorporating is not something to fliply enter into. It takes good technical and professional advice to consider books, rollovers and other minutiae. It is not cheap. If you deign to close your business, the tax authorities will hound you, threaten and cajole you into continuing your filings unless you go through the dissolution process. Hence, incorporation is like a marriage. You marry the business.