Unit economics, the profit or loss on a single unit sold, tells you whether a new product is fundamentally viable before you scale spending on it.
What to include per unit
- Product cost and any per-unit shipping or fulfillment fees
- Payment processing fees, typically 2-3% of the sale price
- Marketplace or platform fees if applicable
- A reasonable allocation of customer acquisition cost, if the product relies on paid advertising to sell
Why this matters before scaling
A product with negative or thin unit economics doesn’t become profitable by selling more of it. Scaling spend on a product that loses money per unit just loses money faster. Validate unit economics are genuinely positive before investing in growth.
The number that actually matters
Contribution margin per unit, what’s left after variable costs before fixed overhead, is the number to check first. A healthy contribution margin means the product can eventually cover fixed costs and turn a profit at scale.