Money, Pricing & Model

At what point in my journey should I actually start caring about unit economics, versus just focusing on getting users?

A starting point

Before product-market fit, obsessing over unit economics is premature because you're still changing the product, the price, and the customer. But you should know your rough contribution margin per customer from day one, because it decides whether growth ever becomes a business. As a starting point, chase evidence that people want and repeat-use the product first, then get serious about CAC, payback, and LTV the moment you start spending money to acquire customers at scale.

Go deeper

Hand-picked from around the web, each with a note on why it earns your time.

2 resources 2 link-checked

Read

✍️ Essay
✓ Link checked Free Beginner

Why we picked it This is the essay that forces the honest question underneath your idea: are you building a growth company or a good small business, because they are different DNA and require different lives. Graham is blunt that a barbershop is not a startup no matter how new it is, and that clarity helps you choose on purpose instead of drifting. There is nothing wrong with either path, but you should pick the one you actually want before you spend years on it.

Startup = Growth

From Paul Graham by Paul Graham ~20 min read

  • A startup is defined by fast growth, not by being new or funded, so a business that cannot grow fast is a different (and often fine) choice, just not a startup.
  • Growth needs two things at once: something many people want, and a way to reach them at scale, if either is missing the idea caps out as a niche.
  • Deciding whether your idea can grow beyond a niche is really deciding what kind of company, and what kind of years, you are signing up for.
Open paulgraham.com →
📄 Article
✓ Link checked Free Intermediate

Why we picked it This piece answers the sequencing question head on: it places unit economics right at the handoff between reaching product-market fit and figuring out how to sell repeatably. Written by an investor who lives in the go-to-market stage, it makes the case that unit economics is not a pre-PMF concern, but it becomes the thing that decides whether your growth is worth scaling once retention shows the product is working. It is a clear map of what to prove, and in what order.

Understanding Unit Economics: The Bridge Between Product-Market Fit and Go-to-Market Fit

From Stage 2 Capital by Brent Holloway About 8 minute read

  • Prove that people want and keep using the product first, then get serious about unit economics: the article frames it as the bridge from PMF to a repeatable go-to-market model.
  • Once retention holds, metrics like CAC payback and LTV to CAC are what tell you whether growth is sustainable or just expensive.
  • Skipping the economics step is a common founder mistake: if the per-customer math is broken, growing bigger usually makes the losses bigger, not the business healthier.
Open stage2.capital →

People also ask

What are unit economics and why do they matter? Unit economics is the profit or loss on a single customer or unit, strip away the noise and ask 'do I make money on one customer?' If the answer is... Beginner 3 resources → How do I calculate CAC (customer acquisition cost) and LTV? CAC = total sales and marketing spend divided by new customers acquired in that period, count everything, not just ad spend. LTV = the profit (not ... Intermediate 3 resources → What is a good LTV to CAC ratio? The rule of thumb is LTV:CAC of at least 3:1, earn back roughly three times what it costs to acquire a customer. Below 1:1 you lose money on every ... Intermediate 3 resources → What metrics should I actually track as an early-stage SaaS founder? Early on, obsess over MRR growth, churn, gross margin, and CAC payback, ignore vanity metrics like downloads and pageviews. Net revenue retention t... Intermediate 3 resources → How do I build a simple financial model or revenue projection? Build bottom-up from real drivers, leads, conversion rate, price, churn, not top-down from 'we'll grab 1% of a huge market.' A useful early model f... Intermediate 3 resources → What is churn and how much churn is too much? Churn is the rate customers leave, and it silently caps your growth because you're refilling a leaky bucket. For SMB SaaS, ~3-5% monthly is common ... Intermediate 2 resources →