In the business account settings, you might see only one option: Close my account. This is where things get tricky. Clicking this button does not convert your account back to a personal one. Instead, ...

Your Amazon account URL is a profile page that includes information about yourself, shopping preferences, product reviews, and more.

To sell anything on Amazon, you'll need to create an Amazon seller account and fill out a multi-step application, which may take a week to process.