"Why so expensive?"
I wish I could sell my armor at a less expensive price, but carbon fiber is expensive, and there is a lot of labor involved. It's a one person operation, and it takes a lot of time. So this is what I have to sell it for to make it worthwhile. This armor adds a lot of frame protection at super low weight and it looks a lot better than an old tire zip-tied to your downtube. It will fit a variety of frames. If you have an expensive carbon fiber mountain bike, I believe that my armor is worth the investment to prevent frame replacement due to damage from flying rocks.