With products like these, I always wonder how much groupthink played a part.
You can't tell me that they consulted with several people outside the company who said "That thing? Only $300!?!?! Fantastic idea, I'd buy one, and I think others would too."
I don't really ridicule people's appearances, but if someone showed up near me with one of these on, I'd laugh. It looks ridiculous.
Maybe as a $50 novelty for really specific edge cases, it'd have some market potential. Don't get me wrong, I'd still laugh...just a little less.