This kind of reminds me of the printers, where stores charge insane prices for a USB cable. One trade seller I know in Ireland charges 99c (US$1.33) per cable in bulk! So even those charging $5 or â‚¬5 per cable is making plenty of profit on them.
While I'm sure the $100+ HDMI cables deliver a cleaner signal than the $5 to $25 regular HDMI cables, unlike an analogue cable connection, it takes a significant amount of interference or a very poor quality cable before interference starts showing up on the TV, i.e. where the TV can no longer distinguish between the individual '0' and '1' bits. By that stage, usually the picture disappears completely, like a weak digital broadcast TV signal. So if someone were to replace a $100 cable with a $5 cable on a TV without the owner knowing about this, there is a good chance this would be go unnoticed until the owner decides to connect something else to the TV and notices that the HDMI cable was changed.
"Would you really want to put a $25 cable with a $3,000 TV?" he says.
"You'd be wasting your money on the TV if you were to do that."
I'm sure someone who buys a $3,000 chandelier would be thinking the same about getting 50c light bulbs for it . . .
Hmm, this gives me an idea - Let's start a light bulb company that makes high quality $50 light bulbs for those high value light fixtures.