Chances are most users will never tell the difference. It is a product where most of the value is in the mind of the buyer. Thus Monster Cable lavishes attention on the people who move its goods.
Salespeople get fancy trips, and store owners get fancy markups.
Wire and cable are an afterthought to a large stereo purchase, and therefore do not have to be competitively priced. Because Hasbro, the manufacturer seems to have deliberately made them scarce. Limiting supply gives rise to a belief that the cheaply made imports have some kind of collector's value. It also makes retailers happy, because they won't be stuck with unsold inventory. Oversupplying product is the greatest risk associated with fad marketing.