Hey @Christoffer,
The “Cost” field is intentionally replaced by the Tickets field when you have Event Tickets active on a site alongside The Events Calendar. This is by design, so that the “cost” that displays in the front-end views is just whatever ticket price can be pulled from the tickets you’ve created for the event.
I’m sorry if this limitation is disappointing – it’s something we’ve gotten mixed feedback about and so this current configuration may change in the future, but for now this is unfortunately the nature of the plugins 🙁
Thanks,
George