The maximum fee a user is willing to pay for a transaction on the Ethereum blockchain network.
In order to process a transaction on the Ethereum blockchain users have to pay a fee which is referred to as the gas price.
The gas required for a transaction varies based on network usage and congestion, encouraging users to increase the gas limit during peak times to prioritize execution.
Gas costs have very small denominations and are shown as “gwei” for ease of use. 1 gwei = 10^-9 ETH.
Most users can modify these gas limits easily via settings available on the MetaMask wallet.