Amazon categoriesA group to which any product listed on Amazon must be assigned. Every Amazon venue has its own number of categories and sub-categories, depending on local laws and regional peculiarities that influence the demand and the type of tax levied on specific products. Many Amazon categories are open to all sellers, but some are restricted to brand owners and others are conditional upon the seller paying a fee. Others still require approval from Amazon, which is granted on a case-by-case basis. Sellers call these categories ‘gated’.