As Sui is currently only running on testnet, its native token, SUI, is not for sale. However, you are able to claim Sui test coins by using the BitKeep Sui wallet.
1. After adding Sui Devnet, select "Tools" on the BitKeep Wallet homepage.
2. Select “Test Coin”.
3. Copy and paste your Sui address from the homepage and press “OK”.
4. Back to the homepage, you will see the SUI test coins airdropped to your BitKeep Sui wallet.