> For the complete documentation index, see [llms.txt](https://docs.pebblestream.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.pebblestream.io/trade-assets/what-are-network-fees.md).

# What are Network Fees?

## Why is SUI Coin needed when sending or converting digital assets?

Every blockchain transaction requires a certain fee. Since all transactions on the Pebble service are based on the **SUI blockchain**, you need to hold SUI Coins in your wallet to cover the transaction fees.

Blockchain transactions are made without intermediaries, and once the transaction information is recorded, it cannot be modified or tampered with. Thanks to this characteristic, blockchain transactions are highly transparent and secure.

If you’d like to learn more about blockchain, please read the document below.

* [What is Web3?](/blockchain/what-is-web3.md)
* [What is Blockchain?](/blockchain/what-is-blockchain.md)

## **Pebble Offers 3 Free Conversion Fees!**

The SUI blockchain we use provides more predictable and lower fees compared to Ethereum and Solana, ensuring a more efficient transaction environment. With just **0.1 SUI** in your wallet, you can instantly convert game tokens or game NFTs.

We also fully cover the conversion fees for game tokens and game NFTs up to **3 times**, making it easier for you to enjoy blockchain games!