Miner's fee is the fee incurred by the Ethernet "miners" when processing transactions on the blockchain (which can also be understood as the transaction fee in the blockchain network). The miner's fee is charged in ETH, the native token of Ether, and is generally calculated using Gwei, the most basic unit in the Ether code. The more transactions made through Ether, the higher the miner's fee, which may make smaller transactions less cost effective