While the Project Total (sales price) is prominently displayed at the top of your Project Overview Page, you may also want to view the total costs for the project.
To view your project costs:
Open your project to the Overview page and take a look at the Costs/Margins graph on the right.
If your project is currently displaying "Margins" in that section, click "Show Costs" in the top right corner:
Hope this helps! Let us know if you have any other questions!