This is driving me a but nutty, people buy these cables as they DO make a difference and the reason why manufacturers sell at these prices is because they can because the demand is there! If you don't believe then can i suggest you contact someone like Dave at MCRU and ask him if you can demo some bits and you may be pleasantly surprised, and more importantly what have you got to loose?
I cannot personally afford to spend £450 on a USB cable but i can vouch for the fact that is definitely does make a difference in a system that i no to sound bloody great at the best of times, so if you can improve the sound of your system and you can afford it then i say go for it. If you can achieve the sound you are looking for with better equipment and thats your preference then go for it!
I am about to trial some interconnects so i will let you all know how that goes.
Amplifier:
Sony DA-2400ES
Sources:
Technics SL-PG490 CD Player
Pioneer N-50 - Network Streamer
Sony MDS-JB940 Mini Disc Player
Sony BDP-S360 BLU RAY
SKY HD 1tb Box
Speakers:
Paradigm Monitor 7 Monitors
Paradigm Centre
Mordaunt Short Rears
Cables:
Tellurium Blue speaker cables with bridges
and terminated with Z plugs
Black Rhodium twist.