The per-unit quote is the number you anchor on. You build the budget around it, price the product off it, and pitch the margin from it. It’s also rarely what a finished, delivered, sellable unit actually costs. The distance between the quote and the real landed cost is where a lot of funded launches quietly burn through their runway. Here are the costs that stay hidden until the production run is already underway, and how experienced founders account for them before committing money.
The Quote Is a Unit Price, Not a Project Price
A factory quote answers one narrow question: what it costs to run a set number of units through the line. That’s useful, and it isn’t the same as what the project costs. Founders who treat the two as interchangeable set a retail price that looks healthy on the spreadsheet and thins out with every real cost that lands after the PO. The fix isn’t pessimism. It’s counting the full set of line items before you commit.
The One-Time Costs That Feel Small Until They Aren’t
Tooling comes first and surprises people most. A custom injection mold can run anywhere from a few thousand dollars to well past fifty thousand for a complex multi-cavity part, and you carry that cost before a single sellable unit exists. Amortized across a small first run, it can dwarf the per-unit price. Ask who owns the tooling once it’s paid for, because a mold you financed but don’t control quietly locks you to one supplier.
Sampling is the other one. Getting a sample that matches the spec often takes several rounds, each with its own cost and its own three-to-four-week clock. Budgeting for one sample and getting five is a common way to blow both the timeline and the early cash position.
The Units You Pay For and Can’t Sell
No run comes back perfect. A reject rate of a few percent is normal, and harder categories run higher. You pay to make those units, and depending on the agreement, you may also pay for inspection and rework.
- Defect rate. Set an acceptable quality level in writing before production, so “acceptable” isn’t decided after the units arrive.
- Inspection. Third-party pre-shipment inspection costs a few hundred dollars per check and catches problems while they’re still the factory’s to fix, not yours.
- Rework and returns. A batch that ships out of spec becomes customer returns later, at several times the cost of catching it at the source.
The honest way to price is to assume a loss rate, not to hope for zero.
Everything Between the Factory Door and Your Dock
The quote usually ends at the factory. The product still has to reach you. Ocean and air freight, port fees, customs brokerage, and duties all stack onto the unit before it’s sellable, and tariff rates on some categories have moved sharply and unpredictably over the past two years. Depending on the product and its origin, this layer can add anywhere from ten to forty percent to the delivered cost. Two otherwise identical products from two countries can carry very different duty rates, so origin is a cost decision, not only a logistics one. Landed cost, not factory cost, is the number your margin actually lives on.
The Costs That Never Appear on an Invoice
Two more rarely get counted, and both are real.
Your time is the first. Managing a factory relationship across a twelve-hour time zone difference, chasing updates, and reviewing samples is a part-time job during a production cycle. If you’re the founder, that’s time not spent selling.
Cash is the second. Most factories want a deposit up front and the balance before shipment, so you’re financing the entire run months before revenue arrives. A cheap unit price that ties up your working capital for a full quarter isn’t as cheap as it looks.
Where the Real Number Comes From
Every cost above is easier to see when the partner making your product is willing to name them out loud. A quote that breaks the factory price out from tooling, freight, and project fees tells you far more than a single blended number, and a partner who flags a realistic reject rate and lead time is worth more than one who quotes low and explains the overruns later. This is why learning how to vet a product manufacturing partner pays off well past the selection itself. The same diligence that confirms a factory can build your product also surfaces the costs that would otherwise ambush you mid-run.
Build your model on the delivered, inspected, duty-paid cost of a sellable unit, with a loss rate and your own hours priced in. Do that, and the margin you present is one you can actually keep. The cheapest quote is rarely the cheapest project, and the founders who learn that before the first run are usually the ones who make it to the second.