# KAS you need

> What a launch or a buy needs in KAS.

You trade on Kasseal with KAS from your own wallet. When a launch or a buy needs more KAS than your wallet holds, the app says how much is missing.

## How much do I need?

- **A buy** needs the price of the tokens, the 1% curve fee, a small network fee and a 5 KAS deposit for the new token UTXO (returned when you sell). See [Token UTXOs and deposits](https://app.kasseal.com/docs/utxos).
- **A launch** needs the network fees of two transactions and the KAS the token’s new cells carry; the Create screen shows the exact amount before you sign. See [What a launch costs](https://app.kasseal.com/docs/launch-costs).

Source: https://app.kasseal.com/docs/kas