Journal
Practical insights on performance marketing and e-commerce.

ROAS vs MER: Which Metric Should You Actually Trust?
ROAS measures the platform; MER measures the business. Learn the difference that decides whether your store is actually profitable.

nCAC: The True Cost of Acquiring a New Customer
Blended CAC lies because it mixes new and returning customers. Learn why nCAC is the number that reveals your real growth efficiency.

Cash on Delivery: The Real Profit Math After Returns
In COD stores, a confirmed order isn’t cash in the bank. Learn how to calculate real profit after collection and returns.

Raise Your Average Order Value (AOV) Without New Traffic
The cheapest growth comes from the same customer. Learn how to raise AOV and make your ads more profitable with zero extra spend.

Why Do So Many E-commerce Stores Fail? 6 Causes and Fixes
Most stores don’t fail because of the product — they fail because of the system. The 6 causes we see most, and how to avoid them.

How to Run Offers and Discounts Without Killing Your Margin
Discounts are double-edged: they lift sales and eat profit. Learn how to run smart offers that raise value without destroying margin.

Contribution Margin: The Number to Know Before You Scale
Gross margin misleads you; contribution margin tells the truth. Learn how to calculate it and why it’s your ad break-even line.
A correct GA4 setup from scratch
90% of GA4 setups have basic errors. Here's how to build one right from the start.
CRO in 2026 — not what it used to be
Old best practices now mislead. Real optimization today is hypothesis testing.