Your ₹400 serum is losing money on every order. Here's the math.

Let's say you've launched a new vitamin C serum. MRP: ₹400. Congratulations. Now let's find out how much money you lose every time someone buys it.

The serum, with packaging, costs you about ₹150 to make. Delivery costs another ₹100. So product and shipping take ₹250, and you're left holding ₹150. That's your profit, right?

Wrong. We haven't acquired the customer yet.

The average customer acquisition cost in skincare runs between ₹100 and ₹300. On a ₹400 product. Sit with that for a second: acquiring the customer can cost almost as much as everything else combined.

Keep going. If the order is prepaid, the payment gateway takes 2%. If it's COD, the shipping company takes another ₹50 to ₹60. And after all of this, 15 to 20% of your orders will come back as RTO, returned to origin, which means you pay the shipping company again for the privilege of getting your own product back. Then GST at 18%.

And I still haven't added your warehouse cost, damaged orders, app subscriptions, corrugated boxes, or the salary of anyone you've hired. That's how a founder ends up asking the question we once heard in an audit: "Our investment was ₹35 lakh. How is the loss ₹36 lakh?"

The answer is that every single order was losing money, and marketing was simply the machine multiplying the loss. More ads meant more orders meant more bleeding. The dashboard showed sales going up. The bank account showed the truth.

Here's the uncomfortable rule we work by: if your profit margin is under 30%, paid ads are not for you yet. It isn't a creative problem, it isn't a targeting problem, and a new agency won't fix it. The unit economics have to work on paper before a single rupee goes into Meta.

What do you do instead? Fix the margin architecture first. Reprice for the full cost stack, not just COGS. Reduce RTO with prepaid incentives. Look at marketplaces where acquisition works differently. Build content, because attention you earn doesn't show up as a line item on every order.

Run this math on your own product before your next campaign. All of it: product cost, shipping, CAC, gateway or COD fees, RTO at 15 to 20%, GST. If the number at the end is negative, no amount of marketing genius saves it. And if an agency tells you otherwise, show them this post and ask them which line of the math is wrong.