Amazon FBA has lots of benefits for ecommerce businesses. These are the most important ones: More Time to Grow Your Business: This benefit is the most important one. You have more time for marketing and growing your business in the long run. Eligibility for Amazon Prime: Selling products via Amazon Prime makes a big difference, considering that Prime members spend $1,400 per year on average on Amazon, while non-Prime members only spend $700 per year. Winning the buy box more often: Amazon FBA sellers win the buy box more often than FBM sellers. Considering that 82% of Amazon sales go through the Buy Box, this is a real benefit. Most Processes Outsourced: Amazon handles storage, shipping, returns, and customer support for you.