Hi,
As far as I know every trigger or action will be charged, even if the run is skipped you will be charged.
Here's also a thread with the similar query:
https://social.msdn.microsoft.com/Forums/azure/en-US/899ea174-a934-4c98-800a-acf63f08264e/price-for-triggers-with-status-skipped?forum=azurelogicapps
(Please don't forget to accept helpful replies as answer)
Best regards,
Leon