That netizen is right. The US version sells American products, and the Chinese version sells Chinese products.

The quality standards of many products in my country are different from those in foreign countries. To put it bluntly, the quality standards are much lower than those in the United States. As for the price, the US is generally cheaper. That is, including shipping costs and taxes, it is cheaper than in China (of course, some are more expensive than in China). In addition, many things on Amazon in the US can be shipped to China without the need for transshipment