RTFA really, you are talking about a totally different thing than this cable is concerned with - rightly or wrongly, most likely wrongly. It's not about the digital data. Such a cable would be used to, connect, e.g, the digital out of a CD player to an external DAC. What these cable guys are worried about - beside their wallet - is the analog connection. I'd be surprised if it made a difference, but you are barking up the wrong tree. As for your question about the price of the equipment typically connected by such cable: Yeah, you can easily get a CD player and a DAC for several thousand dollars each. And yeah, those things in an adequate environment do make a difference in sound, and if you never heard a really good hifi set you don't know what you are talking about if you think otherwise. So if you think about it that way, if you spent, say, USD 50,000 on a very good hifi set that does make a difference, are you going to worry about a cable for 340, how stupid it may be?