[EC Api] - Added: Cost per epoch

content/glossary/cost-per-epoch.md

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+---
+title: Cost per epoch
+tags:
+  - Staking
+  - proof of stake
+  - SPO
+url: ""
+image: ""
+image_text: ""
+---
+
+A fixed fee, in ada, which the stake pool operator takes from the pool rewards every epoch to cover the costs of running a stake pool. The cost per epoch is subtracted from the total ada rewarded to a pool, before the operator takes their profit margin. Whatever remains is shared proportionally among the delegators.