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

# Check fees

> Each successful data read draws the data_access fee, set onchain in FeeRegistry, from your app's escrow balance.

Creating an access request **does not spend escrow**. Payment happens when your backend reads approved data from the user's Personal Server — each successful read draws the `data_access` fee from your app's escrow balance.

Fee amounts and assets are set onchain in `FeeRegistry` and can change, so treat any number you see quoted as an example, not a fixed price. Check current values in the **Fund escrow** panel of [Vana Account](https://account.vana.org/developers), or on the contract directly:

* **Mainnet:** [`0xb4FA18443E0FA6cdC0280D20b8cCDB2377D13Bf2`](https://vanascan.io/address/0xb4FA18443E0FA6cdC0280D20b8cCDB2377D13Bf2) — fees in **USDC.e**
* **Testnet:** [`0xb4FA18443E0FA6cdC0280D20b8cCDB2377D13Bf2`](https://moksha.vanascan.io/address/0xb4FA18443E0FA6cdC0280D20b8cCDB2377D13Bf2) — fees in **native VANA**

<Tip>**How much will you need?** A rough amount to fund is `expected reads × per-read fee` — for example, to test 10 reads, fund about `10 × the per-read fee` plus a small buffer. You don't need a large balance to start: fund enough for your first batch of reads and [top up escrow](/build-a-vana-app/fund-escrow) anytime.</Tip>