Fees

Since each blockchain transaction requires computational resources to execute, each transaction requires a fee. While every transaction depends on a number of factors, such as transaction size and network, also fees height vary.

Fees also help keep blockchain networks secure. By requiring a fee for every computation executed on the network, they prevent bad actors from spamming the network.

Sources

1. https://support.blockchain.com/hc/en-us/articles/360000939903-Transaction-fees
2. https://ethereum.org/en/developers/docs/gas/