A precise landed cost calculation is the single most important financial metric for an import business. It's the only way to know your true cost for a product before you price it, ensuring that every sale is actually profitable instead of just looking good on paper.
- Start with Your "Ex-Works" Product Cost. The first number you need is the base price per unit from your supplier. This is often called the EXW or Ex-Works price, and it covers only the cost of manufacturing the product itself. Think of this as the raw starting point before you add all the other expenses required to actually get it in your hands.
- Build a "Fully Loaded" Unit Cost Checklist. You need to account for all the costs that happen at the factory before the product even ships. In an episode of Firing The Man, David Schomer detailed his process of using a master checklist to ask suppliers about every potential fee. This includes custom packaging, product inserts, poly bags, labeling, and quality control inspections. By getting these on a per-unit basis, you move from the simple EXW price to what David calls a "fully loaded unit cost."
- Calculate Per-Unit Freight and Shipping. This is often the largest and most variable expense. You'll have costs for freight from the factory to the port, the ocean or air journey itself, and then trucking from the destination port to your warehouse or 3PL. As the hosts of Firing The Man advise, the best way to make this number useful is to divide the total shipping bill by the number of units in your shipment. This gives you a clear "shipping cost per unit" to add to your total.
- Add Duties, Tariffs, and Brokerage Fees. Don't forget the government. Every imported product is subject to duties, taxes, and potentially tariffs based on its classification and country of origin. On the Serious Sellers Podcast, Steve Simonson explained that these costs can fluctuate, but you should calculate them for every shipment to understand your true blended cost over time. This category also includes the fees you pay to a customs broker to handle the paperwork, which Sabir Semerkant on Amazon Legends notes is a critical part of the landed cost formula.
- Sum Everything for the Final Landed Cost. The last step is simple accounting. Add your fully loaded unit cost (Step 2), your per-unit shipping cost (Step 3), and your per-unit duties and fees (Step 4) together. The resulting number is your true landed cost. As Michael Lebhar explained on Serious Sellers, having this number is key. He knows one of his products has a landed cost of $4 and sells for $24.99, which gives him a clear view of his potential profit margin before a single dollar of marketing is spent.
The biggest mistake you can make is confusing your supplier's initial quote with your final landed cost. As Sabir Semerkant pointed out, warehouse fees like Amazon FBA fulfillment costs are separate from landed cost, which is purely about getting the product from your supplier to your domestic warehouse, ready for sale across any channel.






