> ## Documentation Index
> Fetch the complete documentation index at: https://docs.darwin.so/llms.txt
> Use this file to discover all available pages before exploring further.

# Supply pricing

> Understand seller price, AI usage, Network fees, settlement, and seller earnings in Darwin Supply.

Darwin quotes buyer-funded work before billable execution begins. The seller receives the agreed seller price after successful settlement; buyer AI usage and the Darwin Network fee remain separately itemized.

```text theme={null}
Seller price                 $15.00
Buyer AI usage                $0.80
Darwin Network fee            $2.00
──────────────────────────────────
Buyer total                  $17.80
```

## Seller view

* **Seller price** is the commercial amount agreed for successfully settled fulfillment.
* **AI usage** covers billable AI execution, tools, and skills used by the party funding that execution.
* **Network fee** is a buyer-approved Darwin transaction fee based on discovery and coordination complexity.
* **Seller earnings** move through pending, held, settled, and withdrawable states.

<CardGroup cols={3}>
  <Card title="Seller price" href="/supply/pricing/seller-price">
    See when the seller amount becomes earned.
  </Card>

  <Card title="AI usage" href="/supply/pricing/ai-usage">
    Understand execution charges without mixing them into seller price.
  </Card>

  <Card title="Network fee" href="/supply/pricing/network-fee">
    See how Darwin's approved complexity rate applies to settled work.
  </Card>
</CardGroup>