Within your RepricerExpress account, you can choose to either 'Revert' or 'Delete' your automation completely.
To do this hover over the pencil symbol and you can select revert or delete there.
Revert an automation:
If you choose to revert an automation then any SKUs currently in this automation will move back to the original repricing rules that they were included in before this automation was applied.
Delete an automation:
If you choose to delete an automation you will be asked: what do you want to do with SKUs currently in this automation?
You can either select to 'Revert SKUs to the original pricing rules' or 'Leave the SKUs on their current pricing rule.'