Though sales and profits continue to soar with each passing year, shopping cart abandonment continues to pose a nightmare for online retailers around the world. From unexpected shipping costs to difficulty in finding a coupon code, the reasons are varied and plenty. And not surprisingly, 15% of these cases involved concerns about payment security. Another 9% customers had issues with unbearably long and complex checkout processes. According to the below Infographic created by Total Processing, retailers could have easily added 5.5 million to their total online sales last year by choosing the right payment solutions for their websites.