CPM means how much you pay for every 1,000 impressions. To guess how much you might earn, you can look at your conversion rate and how much each conversion pays you. For example, if you get one sale every 2,000 impressions and each sale gives you $10, then you know how much those impressions are worth to you. If your CPM is lower than what you earn, then the campaign can be profitable. It’s not exact, but it gives you a basic idea. What other simple methods do you think can help plan pop campaign earnings?