Profit of Stake Pool consists of Cost and Margin.
Currently, the minimum cost that can be set is 340 ADA,
and the margin can be set from 0% to 100%.
ADAgogo1 has set the Pool Magirn to 0%
and will keep the Pool Margin to 0% until the end of 2022.
Cost is set to minimum and will not be changed.
Delegators receive the amount excluding Cost and Margin from block rewards according to their stake.