The sourcing, freight, and inventory decisions that determine whether a physical-product business can actually deliver — and the mistakes that trap cash or stock out on launch day.
For most physical products, the chain looks roughly like this: raw materials or components move to a factory for manufacturing, finished goods go through quality inspection, freight carries them from the factory to your country, customs clears the shipment, a domestic warehouse holds it, and fulfillment gets it to the customer. Each link depends on the one before it finishing on time, so a delay or failure anywhere pushes out everything downstream.
Consider Rosa, who sources insulated water bottles from a factory outside Shenzhen. Her bottles finish manufacturing on schedule, but a routine customs inspection at the port of Los Angeles flags her shipment for an extra document review. That review adds twelve days she had not budgeted for, and by the time her inventory reaches her third party warehouse in Ohio, the holiday selling window she planned around has already started closing. Nothing about her factory or her freight forwarder failed. The chain simply has more links than most first time importers expect, and each one can independently run late.
This is why experienced operators plan backward from the date they need inventory on a shelf or in a warehouse, then pad every stage of the chain, not just the one stage they can see clearly (usually the factory's quoted lead time). A missed launch window caused by customs delays, not manufacturing delays, is one of the most common reasons a new physical product business runs short of cash before its first restock arrives.
Once goods leave the factory, you are choosing between two fundamentally different ways to move them: ocean freight, which is slow and cheap, and air freight, which is fast and expensive. Almost no physical product business uses only one. The real skill is knowing which shipments deserve which mode.
| Ocean freight | Air freight | |
|---|---|---|
| Cost | Much cheaper per unit at volume | Much more expensive per unit |
| Speed | Weeks (often 3 to 6 or more depending on origin) | Days |
| Best for | Planned inventory, bulk restocking | Urgent gaps, samples, high value or low weight items |
| Minimum practical volume | Usually needs a full or partial container | No real minimum |
Most physical product businesses use ocean freight for planned inventory and reserve air freight for emergencies. An out of stock situation caused by ocean freight timing is expensive to fix by air, but running out of stock for weeks is usually far more expensive still.
Incoterms are a standardized set of terms, published by the International Chamber of Commerce, that define exactly where responsibility (and cost) for a shipment transfers from seller to buyer. There are eleven of them in total, but most founders only ever negotiate within two, depending on how much control they want over the freight and customs process.
Key Terms
Neither is universally better. FOB gives you more control and often a lower total cost if you can manage the logistics yourself, or through a freight forwarder. DDP trades some of that cost and control for simplicity, which can be worth it for a first shipment while you are still learning how the process works.
Anita ordered her first production run of ceramic mugs under DDP terms, paying more per unit but letting the factory handle a customs process she had never dealt with before. By her third order, she had a customs broker of her own and enough freight forwarder relationships to switch to FOB, saving close to eight percent per unit on landed cost. The lesson generalizes: DDP is a reasonable place to start, and FOB is often where experienced importers end up once they have built the relationships and knowledge that made DDP's simplicity worth paying for in the first place.
The right freight mode and the right Incoterm depend on your situation for that specific shipment, not on a single rule you apply every time. Work through this for a given order.
Which freight and Incoterm approach fits this shipment?
Is this your first shipment with this factory or freight arrangement?
Total lead time is manufacturing time, plus freight time, plus customs time, plus your own receiving and putaway time, not just the manufacturing quote's stated lead time. Founders who plan only around the number a factory quotes are consistently surprised by how much later inventory actually arrives on a shelf.
Add it up for a typical ocean shipment from Asia: 30 days for manufacturing after you place the order, 30 to 40 days for ocean freight depending on the origin port and destination, 5 to 10 days for customs clearance and drayage to a warehouse, and 3 to 5 days for the warehouse to receive and shelve the inventory. That totals 68 to 85 days from order to sellable stock, roughly ten to twelve weeks, before accounting for any delay. A founder who orders inventory six weeks before they expect to need it, based only on the factory's quoted 30 day lead time, will run out.
Safety stock isn't overcautious
Safety stock is inventory held as a buffer against demand or supply variability. Given how long lead times can stack up for imported physical products, holding some safety stock is standard practice. Running out of stock is often more expensive, in lost sales and search ranking, than the cash cost of holding a bit more inventory than you strictly need.
A common starting point is to hold enough safety stock to cover your full reorder lead time plus a few weeks of margin, then adjust up or down as you learn how variable your own demand and your own supplier actually are. A supplier with a history of on time shipments needs less buffer than one still proving itself; a product with spiky, promotion driven demand needs more buffer than one with steady, predictable sales.
Most of the mistakes that sink a first time importer's launch inventory are not exotic. They are the same handful of errors showing up across nearly every founder's first import, and each one is avoidable once you know to look for it.
Mistakes that catch first-time importers most often
0/4Check your understanding
A founder is three weeks from running out of stock, with her next ocean shipment still six weeks from arriving. What is the most sensible move?
A first-time importer has never dealt with customs and has no freight forwarder relationship yet. Which Incoterm arrangement is the more sensible starting point?
A factory quotes a 30 day manufacturing lead time for a new order. How should a founder plan around that number?
A brand's only factory shuts down for two weeks after a regional power outage, with no notice. What does this scenario illustrate?
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Importing, Tariffs, and Customs Basics for Physical Products
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Devon runs a small outdoor gear brand and normally orders three months of inventory by ocean freight, timed to land six weeks before he expects to need it. One quarter, a spike in demand from a product review video sold through his safety stock faster than planned. Rather than wait eight weeks for his next ocean shipment, he air freighted a small batch, just enough to cover four weeks of sales, while a much larger ocean order was already in transit behind it. The air freight cost him nearly four times as much per unit, but it kept his listing in stock during the demand spike, which mattered more than the extra shipping cost on that one batch.