The total profitability figure in the cost calculator includes the cost of a launch promotion into the calculation of profitability. If you want to remove this cost, as it can skew profitability calculations for those who use a different method of increasing product visibility, you can remove the launch promotion cost manually so you can still get an idea of profitability.
You can also edit the other inputs (such as your goals, rank strategy, and rate of success) to get a more realistic view of what your costs and profits will be the first month. Remember, because Amazon is a cash-heavy business, you may not be profitable for your first few months.