Type 2 have tapped into a market that no one else has, Alot of people who own buses now don't have the first clue on how to do anything and have surplus cash. So all type 2 are doing is offering a service of showing them how, People with money will pay it because of there reputation which is fair. A service will cost you around £100 say, then diagnosing the fault behind the horn not working £80+ course paid for!!!