That 0.1x top-of-funnel ROAS is a measurement illusion. Why a holdout reads 4.7x, the custom-event setup, and how to run a lift test on the cheap.

A teardown of the two-word churn-save SMS that upgrades a wavering subscriber to quarterly, locks in the discount, and pulls a full quarter of revenue forward.

Your worst performer gets all your attention while your best quietly plans an exit. The Rule of 10, and five rituals to hold up your standard-setters.

What UGC really costs in 2026: Billo, Insense and a creator on retainer, the price-jacking trap, and the cost-per-winner number that actually matters.

Shipping, processing and Amazon fees hide below the line and inflate what you think you can pay for a customer. Here's how to rebuild the P&L and fix your CAC.

Most sitewide sales are a panic, not a plan. Here's the SKU-level discount ladder I'd use: owned channels first, paid later, variant-level markdowns.

Everyone can generate a hundred ads now. Almost nobody can tell which three are worth money. Why taste is the moat AI can't copy.

The $800 de minimis rule is powering the cheap-product wave. What it actually does, why building your margin on it is a trap, and the defensible alternative.

Most Shopify brands flat-budget every day and leave 15-20% on the table. Here's how we cross-check Meta, Google and Shopify by day, time, age and gender, then reallocate.

An honest week-by-week diary of taking an account from a $90 to a $27 cost per purchase, dip and all. The messy middle most case studies quietly skip over.