# Billing | Billing days | Cost | Credit | Amount| | -------- | -------- | -------- | -------- | | 15 | 100 | 200 | (100)| | 20 | 150 | 200 | (50)| | Billing days | Cost | Credit | Amount| | -------- | -------- | -------- | -------- | | 30 | 200 | 100 | 100| | 30 | 200 | 50 | 150| | Billing days | Cost | Credit | Amount| | -------- | -------- | -------- | -------- | | 30 | 200 | 0 | 200| | 30 | 200 | 0 | 200| ![image](https://hackmd.io/_uploads/Sk25AupNa.png) ![EdgeHub_L](https://hackmd.io/_uploads/S16USPQXA.svg)