You can do a flight test with an FAA inspector for free in the USA....
Most people don't though (they do it with a DPE instead) as I guess they are booked up a long time in advance, and I expect you have to fly perfectly to pass. If you ever get told by the FAA you have to redo a test with an inspector (for example if you busted airspace etc...) then they don't charge.
Great system the FAA
