When it comes to returning products, Amazon makes it easy for shoppers to return items for a full refund with their A-Z Guarantee. Meanwhile, eBay’s return process can be a bit complicated, as sellers can check the “No Returns” box, preventing buyers from returning the products.
Another difference between the two is the range of fulfillment methods available. Amazon gives sellers two options: you can fulfill the orders yourself through their Fulfillment by Merchant or FBM program or you can let Amazon take care of your orders for you through their Fulfillment by Amazon or FBA program.
They also differ when it comes to seller fees and the type of products you can sell.
Additionally, eBay also follows an auction model, making it ideal for sellers looking to market used items. Amazon is a retailer that also has a marketplace for its third-party sellers.