Actually, none of them is easy to do business on. If you have to pick one, eBay is the first choice. eBay is the world's second largest cross-border e-commerce platform, with its own perfect payment system (Paypal) and logistics system (e-mail treasure). It was founded the earliest (1995), covering 38 countries and 14 languages. The traffic of independent IPs reaches 20 million hits per week, which is much higher than Aliexpress, DHgate, and iOffer. At the same time, eBay sellers come from all over the world, mainly targeting the European and American markets. Unlike the other three platforms, most of the sellers are Chinese, competing on price and selling knockoffs; and the quality of buyers varies. In fact, I strongly recommend everyone to do Amazon, the world's largest cross-border e-commerce platform. Since April last year, Amazon headquarters has opened up its policy to China, allowing enterprises or individuals from mainland China, Hong Kong, Macao, and Taiwan to apply for Amazon professional seller accounts. It is currently the bonus period of the Amazon platform. If you choose the right products, provide good services, and work hard, you still have a good chance of making a profit.