Manufacturers of high end cables often set up demos at industry shows.
In fact.
And some of the more successful demonstrate to anyone with an open mind the superiority of better cables.
But...
In fact....
Lots of people do not have open minds when their biases force them, for their own psychological reasons, to deny the reality that all steaks do not taste the same no matter how many McDonald's fans would tell you otherwise.
All CD players (digital devices, no?) do not sound the same. All HDTV video displays do not process video signals the same (visible to anyone who ever stepped into a big box store.) The last are digital devices.
All digital cables do not transmit a digital signal the same way.
There are analogue distortions that explain the performance, or lack of, for audio cables...and yes, price alone does not determine performance. There are expensive audio cables that beat the pants off the ultra-expensive audio cables. But cheap audio cables have never surpassed in performance audio cables that costs.
There are digital distortions that explain the performance, or lack of, for digital cables....and yes, price alone does not determine performance. Again, the cheap digital cables do not surpass, or often even come close to, the performance of top notch -- and often very expensive -- digital video cables...and yes, you CAN see the differences that anyone can see unless one is blind. But that is another issue.
On the issue of buying up, rather than down, they are values judgments...not a judgment of value.
A cheap cable can be a bad value; and an expensive cable can be a good value.
A cheap car can be a poor value if it doesn't protect your life or drives like a piece of junk, or is inappropriate for your status in life...let's say a Beetle for a business executive, or a Ferrari for a real estate agent.
The best, or even the better, always cost more money than the standard, the pedestrian, the common.
This principle goes for video cables too. The best is expensive and selling it is not a fraud provided the vendor can support his case. Some vendors can; others cannot.
Radio Shack and Monster are just two brands among several hundred. they are generally at the low end of the spectrum in price and performance. When one talks about cheaper cables than Monsters, you are no longer in the basement; you are below the slab in the sub basement.
Life just ain't fair, is it?