Landed Cost Math: South Asia to US FBA

A manufacturer in Dhaka quotes a buyer at $4.20 FOB per unit and the buyer's spreadsheet says: retail at $19.99, that's a 79% margin, ship it. Six months later the same manufacturer is selling direct on Amazon at that same $19.99 price and losing money on every unit. Nothing about the product changed. What changed is that FOB price was never landed cost — it was one line item in a six-line calculation, and the other five ate the margin nobody modeled.

Why a wholesale quote isn't landed cost

Most manufacturers in Bangladesh, India, and Pakistan have priced for wholesale buyers their whole career. That pricing stops at FOB (Free on Board — cost through loading onto the vessel at the origin port) or CIF (Cost, Insurance, Freight — FOB plus shipping and insurance to the destination port). Both are legitimate export terms. Neither is landed cost to US FBA.

The gap is everything that happens after the container clears the destination port: US customs duty, the drayage and inland freight to an Amazon fulfillment center, Amazon's own fulfillment fee for picking, packing, and shipping the unit to a US buyer, Amazon's referral fee (its commission on the sale), and a reserve for the returns that will come back. A CIF quote of $6.50 can easily become a landed cost of $9.80 once all six components are counted — and the merchant who prices off the $6.50 number is underwater from unit one.

Landed cost

The fully loaded cost to get one unit from the factory floor to a fulfilled US sale, including product cost, freight, duty, marketplace fulfillment fees, marketplace referral fees, and an amortized reserve for returns. It is the true cost basis for pricing — not the FOB or CIF quote.

The six components of landed cost

Every one of these has to be a line item, not a rounding error. Skip one and the model is wrong in the direction that hurts you.

1. 1

   1. Unit cost (ex-works or FOB)

   What the factory actually charges per unit at the agreed Incoterm. This is the number most manufacturers already know cold — it's the floor of the model, not the whole model.

2. 2

   2. International freight and insurance

   Ocean or air freight from the origin port to the US, plus cargo insurance. Ocean freight is cheaper per unit but ties up cash longer and adds lead time risk; air freight compresses time but can double or triple the per-unit freight cost on light, bulky goods.

3. 3

   3. US duties and tariffs

   Calculated against the customs value (usually the transaction value, not the retail price) using the product's HTS (Harmonized Tariff Schedule) classification. Rates vary by product category and country of origin, and misclassification is the most common — and most expensive — mistake first-time exporters make. Get the HTS code confirmed by a licensed customs broker before you price, not after.

4. 4

   4. Inland freight to the fulfillment center

   Drayage from the US port of entry to a bonded warehouse or 3PL, then on to Amazon's assigned fulfillment center(s). Amazon does not always place inventory at the nearest FC, and this leg is easy to forget because it feels like an afterthought next to ocean freight.

5. 5

   5. Amazon FBA fulfillment fee + referral fee

   The fulfillment fee is Amazon's charge to pick, pack, and ship the unit to the end customer, based on size tier and weight. The referral fee is Amazon's commission on the sale price, typically 8-17% depending on category. Both apply on every unit sold — they are not alternatives to each other.

6. 6

   6. Returns reserve

   A percentage of revenue set aside for the units that come back damaged, unsellable, or simply returned. Category-dependent — apparel and footwear run high, consumables and hard goods run lower — but budget for it even in month one, before you have your own return-rate data.

Worked example: an illustrative kitchen gadget

The numbers below are illustrative, not real quotes — but the structure is exactly how a real model should look. Assume a mid-size kitchen accessory, ocean freight, sold at a $24.99 US retail price.

Notice what the FOB-only view would have shown: $4.20 cost against $24.99 retail looks like an 83% margin. The real number, after all six components, is 37.7% — still healthy, but a completely different business decision than the spreadsheet the buyer's team probably built first. If that manufacturer had priced off FOB alone and quoted a US-side partner accordingly, the partner would have absorbed a margin collapse nobody saw coming.

The margin trap: wholesale quote vs. landed cost

The trap has a consistent shape. A manufacturer has years of experience quoting wholesale buyers FOB or CIF prices, and that pricing muscle memory carries over when the same manufacturer (or a US-side partner) starts selling direct on Amazon. The FOB number gets treated as "cost" in a retail pricing model, when it's only the first of six line items.

The fix isn't complicated, it's just discipline: build the six-line model before you commit inventory dollars, using a customs broker for the duty line and Amazon's published fee schedule for the FBA and referral lines. Treat the FOB quote as one input, never as the answer. For manufacturers evaluating whether a given SKU is even a good candidate for this math, the hero product selection framework is the step that should come before landed-cost modeling, not after — a low-margin-ceiling product will fail this test no matter how tight the freight negotiation gets.

Ocean vs. air freight: the tradeoff that moves the whole model

Freight mode is usually the single biggest lever a manufacturer controls directly, and it doesn't just change the freight line — it changes cash conversion cycle and stockout risk too.

Air freight almost never makes sense as the default mode for a landed-cost model on thin-margin goods — it can erase the entire margin computed above. It earns its place for the first inventory push (to get live and start collecting reviews and sales velocity fast) or for rescuing a stockout on a proven SKU, not as the standing plan.

How the six components change by category

Duty rates, referral fee percentages, and return rates all vary by category, so the exact same manufacturer selling two different product lines can see meaningfully different landed-cost ratios.

• Apparel and footwear: often carry higher US duty rates and higher return rates (sizing), which stack against margin twice.
• Home goods and kitchen: typically lower duty, moderate FBA fulfillment fee (size-tier driven), lower return rates — often the most forgiving category for a first US FBA launch.
• Electronics accessories: low duty in many cases, but high referral fee sensitivity and returns-for-defect risk that needs a larger reserve.
• Textiles and home decor: duty rates vary widely by fiber content and construction — this is where HTS misclassification does the most damage.

This is also where US compliance for South Asian exporters and this landed-cost model intersect: compliance failures (wrong labeling, missing certifications, incorrect country-of-origin marking) don't just risk enforcement — they can trigger customs holds that add cost and blow the freight-timing assumptions baked into this model.

Building the model before you commit inventory

The order matters. Confirm HTS classification and duty rate with a customs broker first — it's the line item most manufacturers guess at, and it's the one that determines whether the rest of the model is even worth building. Get an actual FBA fee estimate from Amazon's fee schedule for the product's real dimensions and weight, not a comparable product's fees. Set a returns reserve based on category norms even without your own data yet. Only then does the retail price decision become a real number instead of a hope.

Manufacturers who get this sequencing right before their first shipment tend to also be the ones asking the right sourcing questions upstream — see South Asia manufacturers and US marketplaces for how landed cost fits into the broader go-to-market decision, and the Bangladesh-to-Amazon bridge for how this plays out specifically for Bangladesh-based factories building a direct US channel.

What this means for pricing decisions

Once landed cost is real, the pricing conversation changes shape. Instead of asking "what can we charge," the question becomes "does this SKU clear a viable margin at a defensible retail price, and if not, which line item can actually move." Sometimes the answer is a different freight mode. Sometimes it's negotiating unit cost down at a higher MOQ. Sometimes the honest answer is that the SKU doesn't work for direct FBA at all and belongs in a wholesale or manufacturer-partnership channel instead — which is its own valid outcome, not a failure of the math.

This is also where landed cost stops being a spreadsheet exercise and starts being a go-to-market decision that touches catalog setup, review strategy, and even whether manufacturers on Amazon makes more sense as a positioning than a pure private-label play. The number itself is simple arithmetic. Getting every input right before the container ships is the actual work.