https://arstechnica.com/tech-policy/2019/08/report-finds-more-than-4100-unsafe-or-recalled-listings-on-amazon/

Amazon is by far the biggest US online retailer. In the past 20 years it has leapt past its origins as a website you could order books from to become, among other things, the everything store—one-stop shopping for all physical and digital goods from A to Z.

The company's explosive growth is due in part to its sprawling third-party merchant marketplace. Many marketplace merchants are indeed aboveboard retailers, manufacturers, and resellers. But thousands more sell not only counterfeit items, but also mislabeled, unsafe, recalled, or even banned items that can put consumers—especially children—in serious danger.