I needed an HDMI cable to connect my Xbox 360 to a new HDTV that I had recently bought, so I went to my local Fry's and was shocked by the prices. They had HDMI cables priced as high as $300! The cheapest I could find was about $50. That is absolutely crazy, we are talking about a cable here, nothing complicated, just a simple cable. They all do the same thing!
I stood in the aisle for a good 20 minutes searching over and over for the cheapest one (they had a huge selection), unable to come to grips with the fact that I was going to have to spend so much for a stupid cable. Eventually I came to my senses and decided to walk away without a cable, I refused to pay that much! So instead, I decided to go look in the computer accessory section (on the other side of the store, I had been looking the in the TV section).
Guess what I found in the computer-accessory & various-cables section?
$15 HDMI cables.
Moral of this story? Don't pay an Idiot Tax for HDMI cables.