Mefesto said:The initial check ride (oral and practical) must be done at your local FSDO.
Intial CFI applicants have two options for the checkride - as stated above the FAA will do the checkride (at no cost) or one can seek out a Designated Examiner (DE). DE's will typically charge anywhere from $450 to whatever they please, and they have the reputation of being rather difficult. The DE at my local airport was very proud of the fact that he had a 14% pass rate....needless to say I decided not to fly with him.