I think it is just relative, as in how wealthy an individual is as well as how high of a value he places on said item. A friend of mine thinks I am flat out crazy for how much I am willing to spend on an amp or a set of speakers, he just doesn't understand it. On the other hand he rides bicycles...ALOT. He rides with Lance here in Austin. Recently he bought a bike and it cost $5000 and that is without any frickin wheels or a seat!!

It is no doubt, one cool looking bike, super light, all carbon fiber etc. but it doesn't come with a seat or any frickin wheels!! I just couldn't help but point this out to him, now he understands. Anyway, I just feel it's how much value a person places on that item. Someone who owns those amps most likely feels they are a great value and offer performance above and beyond what say a Mcintosh MC402 or Classe CA-300 will, they probably feel they got their monies worth. $30K to them is like $3000 to me and so on. Well that's just IMHO anyway......
Regards,
John
PS-The same friend of mine with the bicycles just recently bought a pet bird for just a hair under $10K. Really cool bird though, I'd like to have one. So how many of you think that paying $10,000 for a pet bird is crazy?