The author made a grave error when he stated:
Because of this, the cable itself is NO DIFFERENT... It's just marketing that some companies charge more for a "v1.3" cable then a "v1.1" cable, etc... The cables themselves will work now and WELL into the future for any other HDMI versions that come along the way....
He may have been right during his time as the article was posted 5 years ago
, but with new features being incorporated into the HDMI spec it will not hold true, especially 1.4 with Ethernet.
Just because a cable manufacturer was up to spec with 1.2a doesn't mean they'll pass with 1.3. That's because signal amplitude dropped about 20% under 1.3. As you may have noticed, manufacturers at the request of HDMI Licensing, LLC, have issued new guidelines in cable labeling and there are now 4 categories for non-automotive HDMI cable, Standard speed, High speed, Ethernet and non-Ethernet as version numbers deemed too confusing for consumers.
HDMI certification is divided into 2 categories, Category 1 and Category 2 with Category 1 = pre-1.3 and Category 2 = post 1.3 and the future.
As more and more consumer electronics start to incorporate 1.3 and 1.4 spec those 1.2 cables you thought to be working into infinity and beyond, because some guy online said so, will start coming up short.
Might want to give this a good read: Audioholics HDMI 1.3 Q&A
Long story short, with HDMI cables prices may not matter but compliance and distance definitely does.