A couple things of note here... The main differences between "cheap" and expensive bars are wall thickness, material, and coating. The "cheap" bars are thinner walled, usually made from inexpensive mild steel, and the coatings (especially the black bars) are crap. Youre 100% guranteed to scratch them up. The expensive bars are made from higher grade material (sometimes aluminum, sometimes stainless, etc... Depends on the maker.), have a thicker wall, and the coatings are usually tough as nails. When using the expensive, thicker walled bars, often the bar end mirrors we all love arent useable. I have broken or bent "cheap" bars in the past, much more easily than I expected. Not to say you cant or shouldnt use them, but you get what you pay for. Handlebars are up there with tires when it comes to your safety when on the road. Cheap material, and weak welds are a recipie for disaster.