Gas price

A normal transaction sending ETH or a token normally costs 21,000 gas, whereas an ERC-20 token approval requires 45,000

• Gas Fees

See also

• etherscan.io
• Gas, Gas fee, Gas Price, Gas limit, EIP-1559, Transaction fee, Gas (Axelar), gwei, Crypto block, TPS, geth --rpc.gascap, eth_estimateGas, eth_gasPrice

https://support.metamask.io/transactions-and-gas/gas-fees/user-guide-gas/#the-gas-limit-units-of-gas-used