Not to be too defensive (because I don't have any investment in whether you buy these or put any safety features on your car at all), but we often hear and read comments about
"cheap Chinese junk" and
"why can't they just make it right" and
"they don't make 'em like they used to" and
"buy American". Here is a product that is high quality, well made completely in the USA, by a fellow enthusiast, specifically for the hobby. So are you gonna walk the walk or just talk? Here's where you can put your money where your mouth is. If you've got a $10,000+ car does $359 seem like too much money to help prevent some fool running into you? Seems like a bargain to me.
If Henry Ford hadn't understood the value of quality, we wouldn't have the Model A's we have now. Buy quality, and buy it once.