My only say is... if it does real good work, it makes sense and it beats a product that is cheaper... buy it.
The most expensive things I buy are shoes and jacket. Vans, Adidas are my favorite for urban wear their shoes hold out and are cheaper than some other things.
Vans are cheap urban wear that's easy to wear in the summer and stylish above all.
Adidas are slightly more expensive but nonetheless very comfortable shoes to wear, I like their mid-top, high-tops because they offer nice comfort and protection from the outside world not to mention I wore them to many places, jogging, jumping, football, sports and they are still holding, not to mention bad weather and snow.
For winter/autumn jackets I prefer snowboarding jackets... they do as they are marketed, they are not as cheap but again do as they are marketed and essentially look cool to wear. And the common misconception is that they make you very hot but in practice that's not true, they merely keep the heat from you stored and don't let outside cold get in because if they made you hot... you would die on a snowboard.