In AdEspresso, by default we do not display revenue unless you specify it in your settings. Click on your settings on the top right hand on your dashboard, circled in red.
Once you click that, you can access the revenue by clicking on App Settings, and then clicking the Edit Settings button.
The application settings box pops up, which is where you can set post-view and post-click attributes as well as enabling or disabling pixel revenue.
Other than the Revenue, we will also be reporting the ROI (Return on Investment), which is basically the profit you earn, based on how much you had invested in the campaign, calculated on the total revenue with the following formula: (Revenue - Spent) / Spent .