Payment processing is one of the most crucial aspects of running an eCommerce marketplace. When you're starting an online mall like Amazon or eBay, make sure you can offer the most convenient payment methods for your customers. It's important to keep in mind that the payment method's popularity greatly depends on the country you're selling in.
For example, Sofort is one of the most popular payment gateways in Germany, and Alipay—in China. The thing is—you can easily lose customers at checkout if they don't trust or don't like your payment methods.
The CS-Cart team has been developing a marketplace software cs-cart.com for 14 years now and they implemented over 70 payment methods into their platform. These guys have the expertise and they share it with an infographic. Check out eCommerce payment statistics by CS-Cart.