Unit economics compare what a single customer or order contributes with what it costs to acquire and serve. Growth only creates value when those numbers work.
11 min read · Level 1
I would rather see a small company with modest growth and unit economics that clearly work than a fast-growing one where every new customer loses money. The first can be scaled with confidence; the second can only be scaled with hope, and hope is expensive when it is funded by other people's capital.
Unit economics look at a single unit - a customer, an order, a subscription - and ask whether it makes money.
Contribution per order, for a consumer product priced at 60:
Price 60 Product cost -24 Shipping -8 Payment processing -2 Contribution margin 26 (about 43%)
Acquisition cost versus lifetime value. If acquiring a customer costs 50, and customers place 3.5 orders on average:
Lifetime contribution: 3.5 x 26 91 Customer acquisition cost 50 LTV to CAC ratio: 91 / 50 about 1.8 Orders needed to recover CAC: 50 / 26 about 1.9
A customer who places only one order loses money: 26 of contribution against 50 of acquisition cost.
Unit economics usually improve as a company matures - better purchasing terms, more organic customers, higher retention - but they need to be on a credible path to profitability, not simply hoped to improve with scale.
Because growth multiplies whatever the unit economics are. If each customer makes money, growth creates value; if each customer loses money, growth destroys it faster.
It is also where attractive headline growth most often hides a problem. Rapid revenue growth can come from spending more to acquire customers who never become profitable.
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The same business at two levels of retention.
Orders per customer Lifetime contribution CAC LTV / CAC 1.5 39 50 about 0.8 3.5 91 50 about 1.8
At 1.5 orders per customer, every customer acquired loses about 11 on average (39 - 50). At 3.5, each contributes about 41 more than it cost. The product, prices and acquisition cost are identical; retention alone decides whether growth creates or destroys value.
Calculating lifetime value with optimistic retention assumptions, or ignoring shipping, payment and servicing costs when computing contribution.
Subtract all variable costs, including shipping, payments and servicing, from price.
Divide all sales and marketing spend by new customers acquired.
Base orders or months per customer on real cohort data, not hopes.
Find how many orders or months it takes to recover acquisition cost.
When evaluating any company that spends money to acquire customers.
Do not over-interpret unit economics from very early companies with few customers or immature pricing; treat them as direction, not conclusion.
Several delivery and ride-sharing companies grew rapidly in the 2010s with prices below their cost of service, as disclosed in later public filings showing substantial losses per unit in early periods. Companies that later improved unit economics did so through pricing, density and cost changes rather than scale alone.
Scale does not fix unit economics by itself. Ask what specific change will make each unit profitable.
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