Most Shopify founders think they know what their products cost.

They know the supplier price. Maybe the shipping cost. They think that's COGS.

The problem is that supplier invoice price is rarely the real cost of getting that product onto a customer's doorstep.

And confusing COGS with landed cost can quietly destroy your margins.

The Difference (And Why It Matters)

COGS is what accounting professionals call "Cost of Goods Sold." It's pure: the price you pay the supplier for the item itself. Nothing else.

$12. That's COGS.

Landed Cost is everything it takes to get that item to your warehouse and ready to sell:

That same product might actually cost $18 by the time it lands in your warehouse.

Here's the mistake: Most founders use the $12 number for pricing decisions. They build their entire P&L around $12. Then they wonder why their margins are lower than they expected.

They were never calculating the right number.

A Real-World Example

Let's say you source a product from a supplier in Vietnam.

Supplier invoice: $8 per unit.

You think COGS is $8. You're wrong.

Here's what actually happens:

Real landed cost: $10.94

That $8 number you were using? It was short by 37%.

If you priced based on $8, your margins are 37% worse than you think.

Why Suppliers Only Show You COGS

Your supplier quotes $8. They're not lying. That's what you pay them.

But they're also not in the business of calculating your full cost of operation. That's your job.

They quote ex-factory. That means the cost up to the factory gate. What happens after (shipping, duty, ports, your warehouse) is not their concern.

If you're importing goods, this is especially critical. Tariffs alone can swing your landed cost by 10 to 15%.

Most founders don't know their landed cost because they don't sit through the port clearing process. They just know what hit their credit card from the supplier.

The rest of the costs are scattered: a separate invoice from your freight forwarder, duties on your customs paperwork, 3PL fees buried in a statement.

It's messy. Most people don't add it up.

The Common Mistakes

Mistake 1: Only Using Supplier Cost

"My supplier costs $12, so I price at $36 (3x markup)."

Then you don't account for the $4 in landed cost add-ons. Your real COGS landed cost is $16, not $12. Your markup just dropped to 2.25x. Your margin collapsed.

Mistake 2: Forgetting Return Rates

If 2% of units come back, you're replacing 1 unit for every 50 sold.

That's 2% extra landed cost per unit you're carrying. Most pricing models don't include this.

Mistake 3: Confusing Landed Cost with Retail Cost

Landed cost gets the product to your warehouse. Retail cost includes storage, handling, fulfillment, packaging, and shipping to the customer.

If you only know landed cost, you still don't know your true profit.

How to Calculate It (The Manual Way)

Gather these numbers for your last import:

  1. Supplier invoice total (units × unit price)
  2. Freight cost (divide by total units)
  3. Import duty (check your customs paperwork)
  4. Broker/port fees
  5. 3PL inbound fee (if applicable)
  6. Rejected units (units you can't sell)

Add them all up. Divide by the number of good units you received.

That number is your landed cost.

Let's be honest: if you're manually adding this up every time you import, you're spending hours on spreadsheets.

And the second you import again, the landed cost changes. Is it $10.94 or $11.40? Did your freight rate go up? Did duties change?

Most founders give up and stick with the old number.

How Pandly Tracks It Automatically

Here's the reality: your landed cost shouldn't be a guessing game.

Pandly connects to your supplier data, freight forwarding records, and 3PL systems. It calculates your real landed cost per unit, automatically, every time.

When tariffs shift or shipping rates change, your dashboard updates instantly. You're not manually recalculating. You're not relying on outdated spreadsheets.

You see the real landed cost. You use it for pricing. You understand your actual margins.

That's the only way to make profitable scaling decisions.

This Week

Pull your last three import documents.

Calculate the real landed cost for one product using the method above.

Compare it to what you've been using in your pricing model.

Most founders find they've been 15 to 30% off.

If you're scaling with the wrong cost structure, you're either leaving money on the table or building a business that looks profitable until it isn't.