Where your numbers come from (quick overview)

What you’ll learn

A quick overview of which numbers you enter manually, which numbers D2C Lab calculates automatically, and where the final Net Profit shown in the Master List comes from.

The big idea

D2C Lab doesn’t “guess” your business numbers.

It works like this:

You enter the key inputs (price, costs, fees, etc.)
D2C Lab calculates the breakdown and Net Profit
That Net Profit syncs back to the Master List so you can compare ideas quickly

1) Numbers you enter (inputs)

These are the numbers that come from you (or your supplier quotes).

Typical inputs include:

Selling side

Selling price (what you plan to sell at)

Product costs

Unit cost (from supplier)
Packaging cost (if applicable)
Shipping / freight / landed cost (if you include it per unit)

Marketplace / platform costs

Depending on where you sell, you may enter:

Platform fees
Payment gateway fees
Fulfilment fees
Taxes/charges (if you want them included in the per-unit calculation)

Marketing costs

Ad cost / promo cost per unit (if you want a realistic net profit)

Tip: If you’re not sure about an input yet, you can start with a reasonable estimate and refine later.

2) Numbers D2C Lab calculates (outputs)

Once inputs are saved, D2C Lab calculates:

Total cost per unit (sum of all your costs)
Gross profit (selling price − product cost only)
Net profit (selling price − all costs)
Net margin (net profit as a percentage)

These calculated results appear in the Calculator breakdown and the Net Profit value is shown back in the Master List.

3) What the Master List shows (and why)

The Master List is meant to be a quick “command center”, so it shows only the most important numbers:

Selling price
Net profit

That’s how you quickly compare ideas and decide what’s worth validating, sourcing, and launching.

4) When numbers update

Your Net Profit updates when:

you change inputs in the Calculator, and
you save those changes

If you don’t see an update immediately, refresh once and re-check the Calculator inputs.

5) Currency (quick note)

The global currency is mainly used as the default for new ideas.
Changing global currency should not rewrite currencies for existing ideas.
Supplier pricing may be in a different currency (depending on supplier location).

Best practices (keep it simple)

Start with your best estimates, then refine when you get supplier quotes.
Always include at least one realistic “marketing cost” line (even a small amount) so net profit isn’t inflated.
Use the Master List net profit to shortlist ideas before you invest time into sourcing.

Calculator: inputs + live breakdown + net profit sync
The D2C Lab workflow in one page (Idea → Launched)
Stages explained (Raw → Launched + Killed)