Opinions about efficacy aside, those who are amazed at the price should first try to make something like this themselves. As somone who has worked a long time making Fine Art sculpture editions, I can guarantee you'd be amazed how much time a seemingly simple object can take to fabricate. I gained an entire new understanding of why Black Diamond Racing products cost so much when I fabricated carbon fiber shelves and mats myself. I have no trouble believing that there are one to two hours labor involved in each "Isolators" manufacture. What do you pay your auto technician, plumber, or electrician for labor? Fifty to ninety bucks an hour. You have to remember economy of scale in manufacturing specialty items. It's a fallacy to compare pricing of a mass produced items with something made by one guy in a small workshop.
