How much time and money are we talking about? It really didn't cost me much to become a contractor as far as the license . A day off with no pay and less than $150 in fees. The books and training were already there because I needed those for my regular job ( electrician ).
I didn't spend any real money until I decided to go into business for myself. Then it was like a bucket with a hole in it.
An electrical inspector in this area is not in business for himself. He doesn't even provide a vehicle or fuel. A far as tools, they carry a little tester, multi-function screw driver and a pen ( I think some own a code book ). They get some time to OJT with an experienced inspector that will show them the ropes and that's about it. All of them that I have met have been electricians so they already know what to look for ( all the stuff they tried to hide earlier ).
I have said this before, it's up to the EC to know what he's doing. The inspector is not there to provide design solutions and in many cases the inspector may know less than the contractor. Most inspection departments have a check list that they go by and that's it, unless something really stands out as a violation. Most inspections are cursory at best.
Electrical inspectors are just employees of the city or county, they have a boss just like other employees, they can be hired off the street ( some are even temporary ) and they can be fired. The real power does not come from the inspector but from the AHJ. Just like the police, cops are not the law, they only represent the law.