Amazon's profit from sellers is primarily derived from referral fees, which vary depending on the product category. Generally, these fees range from 8% to 15% of the total sales price. For instance, categories such as electronics may have different fee structures compared to clothing or home goods. Additionally, there is often a minimum fee per item sold, which ensures that Amazon earns a baseline amount regardless of the sale price. Beyond referral fees, sellers may incur extra charges for fulfillment services, such as storage and shipping, especially if they utilize Amazon's Fulfillment by Amazon (FBA) program. This comprehensive fee structure means that while Amazon provides a vast marketplace for sellers, it also takes a significant portion of the sales revenue, which can impact the overall profitability for those selling on the platform.