Most expensive

I have seen speakers in ad's for up to $300,000 and I am sure thats not half of what some may cost but I would never want to see any of them as it would just make me mad. I dont and may never think that any speaker no matter how high the cost can be vastly better or even maybe equal to some for $50K and even hald of that, it just gets a bit silly after awhile.

The most expensive that I can think of are the Kharma Grand Enigma. I believe that there is only one pair, and they were installed in an underground room (large domed ceiling) somewhere in Europe. The price was quoted as 1 million dollars. I think you can google a picture.

No such thing - there is always a bigger fool - so today's most expensive speaker on earth will be surpassed.

FWIW - room acoustics quickly become the most limiting factor for sound quality. You can't put lipstick on a pig (the most expensive speaker on earth is never going to make a bad room sound wonderful)

Polk, Finding out which is the most expensive should be a fairly simple task. If you want a challenge, try to discover which offers the most performance.

Polk432,
I can answer your question partially by the link to this thread:

http://www.bornrich.org/entry/top-10-luxury-speakers-everyone-cant-afford/

Take a look @ these speaker system prices. You are sure going to fall off your chair! ;-)

Where can you hear them??
Well you can hear "lower-end" (if such a thing exists as even their lesser priced speaker are obnoxiously high priced!) Kharma at RMAF.
You can also find a Wilson dealer near your area & hear one of their products.
Ditto for Cabasse, Magico & Eggleston.