A more appropriate question might be: "What do I get for $300 and where can I find it cheaper!?"
From where I stand, it costs $600 to become an ACMT because you need all these:
AppleCare Technician Training $299.
Apple Macintosh Service Exam $150
Mac OS X v10.6 Troubleshooting Exam $150
But if you knew the correct answers to the exams, you wouldn't need the AppleCare training and it would only cost you $300. So now the question has evolved to something like "Where do you get the information to pass the exams without paying Apple $300?"
From where I stand, it costs $600 to become an ACMT because you need all these:
AppleCare Technician Training $299.
Apple Macintosh Service Exam $150
Mac OS X v10.6 Troubleshooting Exam $150
But if you knew the correct answers to the exams, you wouldn't need the AppleCare training and it would only cost you $300. So now the question has evolved to something like "Where do you get the information to pass the exams without paying Apple $300?"