Seller Essentials Blog
The Shipping Adjustment Fees Amazon, eBay & Walmart Charge You After Delivery — and How to Find Them
Carriers and platforms quietly back-charge seller accounts after delivery — FedEx One Rate audits, UPS return adjustments, Amazon’s own FBA re-measurements, and the new USPS $50 hazmat fee. Here’s exactly where these charges hide on Amazon, eBay, and Walmart, and how to audit, dispute, and prevent them.
USPS $50 HazMat Noncompliance Fee: What E-Commerce Sellers Need to Know
Starting July 12, 2026, USPS will charge a $50 noncompliance fee per package when hazardous materials are detected in a commercial shipment that was not properly declared at label creation. Here is what every e-commerce seller needs to know - and exactly what to do before the deadline.
Selling Hazmat on Amazon FBA: A 2026 Guide to the Dangerous Goods Program
A complete 2026 guide to selling hazmat on Amazon FBA: program history, what counts as dangerous goods, the 9 UN classes, prohibited products, the waitlist reality, SDS and exemption sheet documentation, lithium battery rules, hazmat shipping, and the real cost of compliance.
Amazon FBA Hazmat Just Got Easier to Ship: Partnered Carrier Now Open to All Dangerous Goods
Starting April 30, 2026, all FBA-eligible dangerous goods can ship via Amazon’s Partnered Carrier program — no more arranging your own hazmat carriers. Full classification guide, SDS requirements, and updated battery reference chart.
How to Choose an Amazon FBA Prep Center
Choosing the right Amazon FBA prep center is an important decision for sellers who outsource inventory preparation. Prep centers receive products from retailers, distributors, or manufacturers, prepare them according to Amazon’s requirements, and ship them to Amazon fulfillment centers. While many prep centers offer similar services, Read More
Amazon FBA Prep Service Fees Explained
Selling through Amazon FBA requires inventory to be prepared according to Amazon’s packaging, labeling, and shipping requirements before it arrives at an Amazon fulfillment center. Many sellers use third-party prep centers to handle this process rather than preparing products themselves. Understanding how Read More
Amazon’s DD+7 Payout Overhaul: What Changed, Who It Hit, and What Your Money Is Really Financing
The official policy name is Delivery Date Based Reserve, or DDBR. Under this structure, the moment a customer’s order ships, Amazon collects the buyer’s payment and places it into a “deferred transactions” pool.
Amazon’s 3.5% FBA Surcharge Is Here — And Sellers Are Paying the Price
Amazon is adding a 3.5% fuel and logistics surcharge to all FBA fees starting April 17, 2026 — with no end date given. We break down what it actually costs at your volume, chart the full fee history since 2020, and give sellers five concrete steps to take before it hits.
What Is an Amazon FBA Prep Center?
An Amazon FBA prep center is a third-party service that receives, prepares, and ships inventory to Amazon fulfillment centers on behalf of sellers. Before products can be accepted into Amazon’s FBA system, they must meet specific preparation requirements. These Read More
The History of Amazon FBA Prep Services
Amazon FBA prep services did not always exist as a defined part of the Amazon seller ecosystem. In the early years of Fulfillment by Amazon (FBA), most sellers handled product preparation themselves, often working from home or managing small warehouse spaces to Read More
Unpacking Amazon FBA Poly Bag Requirements in 2023
Navigating the world of Amazon FBA can be a complex task, especially when it comes to understanding the various packaging requirements. One essential aspect that sellers must be aware of is the proper use of poly bags for packaging their products. Not only Read More
Fulfillment By Amazon vs Fulfillment By Merchant
As an Amazon seller, you need to determine the best way to get your products into the hands of the customer. You have two basic choices: Fulfill the orders yourself (Fulfillment by Merchant, or FBM)), or take advantage of the Amazon system of order processing known as FBA.