I don't believe high end audio is a sham but it is very complex. The first question is, what is better sound? I'm guessing it means something different to each and everyone of us. If you can imagine your perfect audio system in your mind, what would it sound like? If you don't know, how will you know when you have a system that has achieved it? Figure out what good sound is to you. Be honest with yourself about your abilities and trust what you hear. Understand how important room acoustics are to what you are trying to achieve and how issues can be dealt with. Try to figure out who the other people are that share your audio philosophies and seek out their advice.
A great audio system can be very fulfilling and rewarding or it can be a huge pita. Good luck in your journey.
A great audio system can be very fulfilling and rewarding or it can be a huge pita. Good luck in your journey.