There are no set commission rates and it is completely negotiatable between the seller and Listing Salesperson and Brokerage Firm.
My commission rates can be either a percentage or a flat fee. GST is payable on the real estate commission but not on the selling price of the house ( unless it is a new build ).
I will give you a you a choice of commission rates and a full detailed explanation on how it works. I will provide you with my full service Real Estate Services regardless of what commission rate we both agree upon.