Most sourcing conversations start with “what’s your price?” and end with a decision based on whichever supplier quoted the lowest number. That’s backward. The useful question isn’t what a supplier charges. It’s what the product can afford to cost, given the price it will actually sell for.
Who this is for
You have a target selling price and a profit goal, and you want a hard ceiling on landed cost before comparing supplier quotes, not after picking a favorite.
The beginner mistake to avoid
Treating the lowest supplier quote as the win condition. A cheap unit cost doesn’t mean anything on its own. If marketplace fees, fulfillment, advertising, and expected returns already eat most of the selling price, even a “cheap” supplier can leave the product unprofitable. The number that matters is whether the total landed cost fits inside what’s left after everything else takes its share.
Start with net selling revenue
The calculation should start from the realistic transaction price, not the list price. Discounts, coupons, and promotions reduce what’s actually available for fees, fulfillment, advertising, product cost, and profit. A maximum landed cost built from list price alone approves a supplier cost that won’t actually hold up once real-world pricing kicks in.
Reserve non-product costs first
Marketplace fees, fulfillment, expected returns, advertising, and the desired profit all get reserved from the selling price before landed cost even enters the picture. What’s left after those reservations is the maximum landed-cost allowance, full stop. There’s no negotiating this number down after the fact; it’s the ceiling everything else has to fit under.
Split the allowance
Landed cost itself is made up of several pieces: supplier price, packaging, preparation, freight, insurance, duties, and inspection. If logistics costs are already estimated, subtract them from the total allowance to get the maximum supplier price specifically, which is the number that actually gets compared against quotes.
How product type changes the split
The same total allowance splits very differently depending on what’s being sourced.
A small, light, simple product keeps freight and duties low, so most of the allowance is available for the supplier price itself. A bulky or heavy product eats a much bigger share of the allowance in freight alone, sometimes leaving less room for supplier cost than the total number would suggest. A product needing compliance testing, certification, or careful inspection loses more of the allowance to prep before the supplier price is even considered.
Two products with an identical $9 maximum landed-cost allowance can have very different maximum supplier prices, one at $7 because logistics is cheap, the other at $4.50 because it isn’t.
Example scenario
An illustrative product selling at a realistic $32 after typical discounts, targeting $9 of profit (example figures only):
- Referral fee, fulfillment, advertising, and return allowance reserved: $14.50 combined.
- Profit reserved: $9.00.
- Maximum landed-cost allowance: $32.00 minus $23.50, or $8.50.
- Estimated freight, duties, and prep for this product: $2.20.
- Maximum supplier price: $8.50 minus $2.20, or $6.30.
A supplier quote of $6.80 clears the total allowance on paper but misses the actual supplier-price ceiling once logistics is subtracted out. That’s the number worth catching before a purchase order goes out, not after inventory has landed.
Use the result during supplier negotiation
A supplier quote below the maximum supplier price is a necessary condition, not a green light on its own. Quality, compliance, MOQ, payment terms, and lead time still matter, and a supplier that hits the number but can’t deliver consistent quality is still a bad choice. Think of maximum landed cost as the first filter, not the final decision.
How to use the Maximum Landed Cost Calculator
Reserving fees, fulfillment, advertising, and profit before splitting out a supplier-price ceiling involves enough steps that hand math gets error-prone, especially across more than one product idea. The Maximum Landed Cost Calculator takes selling price, target profit, and cost assumptions and returns:
- Maximum landed cost.
- Maximum supplier cost.
- Logistics allowance.
What to do next
A maximum supplier price only matters if the resulting order actually fits the available inventory capital. Once the ceiling is set, carry it into the initial order decision to check whether a realistic MOQ at that unit cost still leaves room for logistics, launch setup, and a safety reserve.
Related resources
- Tool: Maximum Landed Cost Calculator
- Pillar: Amazon Launch Planner
- Glossary: Landed cost
- Next step: MOQ Is Not the Same as a Safe Initial Order