There is no license fee for any public TEDx event. The only TEDx event type that is fee-based is the Business event, an internal event type granted only to for-profit corporations. Please note that the TEDx Business event fee is discussed directly with the TED Partnerships team.
There is no application or membership fee of any kind to apply for a TEDx license.
TED does not work with any third parties on licensing - any fee-based "TEDx service" for completing an application form is illegitimate, using the community's name without permission.