While I certainly agree that there's some absurdly priced stuff out there, keep things in context.  What average person wouldn't think any of the following are things only an idiot would buy - 
A $2800 CD player - 'I can get a DVD player at Walmart for $50 that'll play CDs and DVDs'  Why get a CD player when you can get an iPod?
A 100x2 Watt amp for $2650 - 'My receiver is 150x7 and it only cost $300' 
A $2K pre-amp (remote costs extra and only has 4 buttons) - See receiver; also - 'What's a pre-amp?'
A $2550 phono stage (without power supply)- 'Who the hell listens to records anymore?  They sound like crap'
A $1500 turntable (not including the cartridge, isolation stuff, cleaning stuff, etc.) - See phono stage comments
A pair of $3200 speakers - 'My HTIB system has 7 speakers, a subwoofer, a 150x7 receiver, and a DVD player for $499'
$200/meter interconnects x however many - 'Its a wire'
$5/ foot speakers cables x however many feet - 'Its a wire'
I don't mean this the wrong way, but that system is a BP6, 2BSST, BCD-1, Rega P5 (without cart), BP1.5 (without MPS2), Bryston interconnects and speaker cables, and a pair of PMC GB1i.  Not exactly Bryston's best or most expensive.  I didn't get into stands, power conditioners, power cables, outlets, dedicated circuits, nor room treatments yet.  I'm sure I'm missing a few things.  99% of the people out there would call you an idiot for buying a system like this.  My paraphrased comments aren't an exaggeration.  I've heard them all.  
The following are some of my favorites too -   
'No iPod dock?'
'Bose is the best' 
'For $5k it should be so loud it knocks the house down.'
'For $5k it should *&%$ my @#$%.' or any other sexual or house cleaning actions. 
'My car's system has way better bass.'
My humble ~$5k system (listed in my signature) is way too overpriced for most people out there.  Most people look at me like I have 3 heads when I tell them I have a $1000 CD player.  Not that I tell too many people.  One of them is a high ranking engineer for Otis elevators who makes about $500k per year.  I make 1/10 of that.  Funny thing is, he's got the top of the line Bose surround system (if there's such a thing) in his basement that cost about what my entire system cost. 
In some ways I envy people who have no idea that reproduced music could sound so good.