Yes, I also think it is very expensive for a cable! ...although...
I bought this to use with a dynamic microphone and the TS-TS cable for my guitar, mainly for live perfomance.
I'm fed up of buying, say, average cables (not even cheapos) to see how they started to fail after a year or two, 4-6 gigs a week, even taking good care of them, using cable ties and coiling them properly (over-under...)
I wanted to consider this purchase and investment, and I'd say it's a pretty safe one, the cables feel so sturdy I'd use them for climbing.
Regarding the sound I have read they are better over other good brands, also their 'link' line offers a more warm or vintage sound against their more bright 'sonorus' line. I can't compare that but I though the link would be more tan enough for me...
Vovox makes cables, that's all they do exclusively, I believe they must be the best.