CAC vs. LTV: how much you can actually afford to spend on a customer
A budget percentage tells you what you're spending. CAC and LTV tell you whether that spend makes money. The unit-economics math every service business should run.
ReadFounder of Prime Marketing. Building marketing systems for service businesses since 2003.
Evan Terrell is the founder of Prime Marketing, a revenue architecture firm for US-based service businesses doing $1M–$10M a year. He started building marketing systems for operators in 2003, and has spent the two decades since on a single conviction: that the reason marketing fails is almost never effort, and almost always structure.
That conviction came from pattern recognition, not theory. Across home services, outdoor living, beauty and aesthetics, and the trades, he kept watching the same thing happen: capable operators pouring money into ads, websites, SEO pushes, and a rotating cast of vendors, while revenue stayed volatile. The activity was real. The predictability never showed up. The businesses that broke out of the cycle weren't the ones who spent more; they were the ones who got demand, authority, and conversion working as a single system instead of five disconnected line items.
Marketing doesn't fail from a lack of effort. It fails from a lack of structure.
Prime Marketing is the operating model he built around that idea. Every engagement starts with a Growth Blueprint, a documented audit and a 12-month roadmap, because executing tactics without a strategy is how budgets disappear. The work runs 100% async, with no sales calls or standing meetings, and the firm reports on revenue, qualified leads, and cost per lead rather than impressions and follower counts. It accepts only four new clients a month, because depth builds durability and volume destroys it.
The results compound. A Las Vegas junk-removal operator went from zero digital presence to a durable multi-six-figure online channel that has held for nearly a decade, and a second brand launched from the same playbook. A microblading studio went from near-closure to fully booked in 30 days, then came back years later to restabilize a second location. An outdoor-living contractor engineered a controlled entry into a premium new market. Different industries, different geographies, same principle: structure precedes scale.
He writes here about what actually moves revenue for service-business operators: paid acquisition, local SEO, content and AI search, conversion, and the revenue operations that tie them together. The throughline is always the same: fewer tactics, more system.
A budget percentage tells you what you're spending. CAC and LTV tell you whether that spend makes money. The unit-economics math every service business should run.
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