A normal click through rate (when a visitor clicks on your PPC ad and goes to your website) for PPC advertising is around 2% but the return on investment (ROI) will vary based on your business. As an example, let's say you receive 100 clicks a day and each click is $0.20. This means that your total cost for these clicks is $20. If you make $5 on each product you sell, you only need to have 4 of those clicks convert to a sale in order to break even.