According to Amazon's policy, personal stores do not need to register a company, but whether they can purchase commercial insurance may vary by region and specific circumstances. Amazon usually requires sellers to have appropriate insurance to protect the rights and interests of consumers.

Typically, personal stores can purchase personal liability insurance or tenant insurance to protect their business. This type of insurance usually provides product liability protection, including product defects, accidental damages, disputes or claims, etc.

However, specific insurance requirements and available options may vary depending on the region and the specific circumstances of the personal store. It is recommended that you consult your local insurance agent or Amazon's customer service department for more accurate information.