$550 to learn what is already in EVERY pinball manual, no thanks. It may be helpful to some people if they have a spare $550, but the maual is the magic answer to any pinball machine.
Also, as the guys have already pointed out, the forum has many many experts who can help you for free.
If anyone in Brisbane or the Gold Coast wants to learn about their machine, just contact Beaky (Andrew-Member here) who can fix any pinball machine, and he has proven time and time again with my 30 machines, that he can fix anything correctly the first time.
If anyone does the course, i hope it works out to be money spent well. Seems very expensive to me. Maybe Beaky can hold a course for $199. lol