example...if the magnetic plug cost 5cents more per plug...you say wow a nickle...but think about it...if they install them as standard equipment in all cars that is a big deal...say they make 500,000 cars/trucks/suvs at an additional nickel each that a total of $25,000 not to mention they will have an extra expense to put that in the manual costing say another 5 cents...which adds up to another $25,000...a total of $50,000 just to do that...its all about profit