* Calculation based on commission: $19,750.00 + GST: $3,112.50 + Marketing: $1000. This calculator is indicative only , some agents use two % depending on sale price , some use the same % across the total sale price, further, some companies have an admin charge as well added on top, the marketing we allocated is very conservative at $1000 it can be anything with some companies even as much as 4,000 and this is paid upfront.