Amazon allows sellers to enroll in Fulfillment by Amazon (FBA), which means Amazon will pick, package, and ship items to customers who are Amazon Prime members under their free two-day shipping policy. Amazon also provides customer support and manages returns. However, the seller still has to track all associated accounting tasks, including inventory storage, fulfillment, removal order, long-term storage (more than 365 days), unplanned services, and returns processing fees. So, while FBA can be the basis of a profitable business relationship with Amazon, it does bring additional accounting needs, as well.