If the manufacturers convince us that someone is actually buying this stuff then they can convince the average consumer that $500 to $1000 for speaker cables is inexpensive. I have to say that their marketing is working. I have spent more on my system in the last couple years than i ever believed would happen. I haven't bought in on most of the tweaks though.Simple solution, trust YOUR ear!
If from marketing, blame but yourself. Company is not forcing you to buy anything.