Many years ago I worked with a guy who was into power boating. One of the lessons I learned from him is that boating accessories always cost more at the boating store than they do at the ordinary hardware store.

The point is that tools and gadgets that are marketed for a narrow niche application always cost more that functionally identical products that have broader uses.

My graduates either say "Pyrex" and came from K-mart, started out as urine collection containers in drug testing programs, or were intended as disposable hospital glassware.