# Unit economics

Concept · [Business and metrics](https://ecosystem.samcarlton.com/business)

Also called: unit economic, per-customer economics

Whether you make or lose money on one customer or one sale, once you count what it cost to win and serve them.

**For example:** It costs you 50 dollars to win a customer who brings in 300 dollars over time. Those unit economics work. If the numbers were reversed, growing would only lose money faster.

## Connects to (5)

- [CAC](https://ecosystem.samcarlton.com/cac): Customer acquisition cost.
- [LTV](https://ecosystem.samcarlton.com/ltv): Lifetime value.
- [Gross margin](https://ecosystem.samcarlton.com/gross-margin): The part of each sale you keep after paying the direct cost of making and delivering what you sold.
- [Business model](https://ecosystem.samcarlton.com/business-model): How your company makes money: who pays, what they pay for and how often.
- [Fractional CFO](https://ecosystem.samcarlton.com/fractional-cfo): A part-time chief financial officer.

Map view: https://ecosystem.samcarlton.com/unit-economics