A network cost is the fee paid to the miners of the network you are using for your cryptocurrency transaction. This fee is also known as a gas fee.
Every transaction on the blockchain requires a network cost. This is because miners use their own computers to verify and process transactions instead of relying on a central authority.
In return, miners are compensated. The network cost also incentivizes miners to protect the network from malicious users.
These are nonrefundable, even if your transaction fails. Miners still have to use their resources to determine that your transaction failed.
The Ethereum blockchain pays miners in Ether (ETH), and is called gwei for network costs.
On other blockchains, the fee is paid in that network’s native token.
For example, on the Polygon blockchain, the network costs are paid in MATIC. But on the BNB blockchain, network costs are paid in BNB.
The network cost you pay will vary according to the network you use.
Uniswap does not receive payment from network costs.