ebay business canada

I report to Revenue Canada?
Because of the difficulty, I started selling all my stuff on ebay.ca, then made a much research and it became in my main activity. I want to know if I should report to Revenue Canada, and I do not do proper accounting.
Yes, we must claim. As a matter of fact was challenged by Revenue Canada ebay.ca, and agreed, bestselling Canadian report, so they could collect taxes from them.
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