As far as I know, only the local club has run courses over here for the licence.
They will be the best people to ask
Jersey Amateur Radio Society - GJ3DVC
The Jersey Amateur Radio Society - Homepage.
Jersey Amateur Radio Society - INDEX
Cost is fairly low I believe, covering expenses of training materials, etc.
Yes, there are 3 licence levels, but the first level gets you an MJ6 callsign allowing you a fair 10W on all the bands of interest.
Go for it.......... just try to ignore the nerdiness of it