Kind of a stupid rule. Besides the fact that most nonworking computer parts have no visual damage, if you know anything about computers, you should know exactly what you are buying just by the model number. Sure, for things like laptops, cases, music players, etc, it would be good to have a picture because those things experience physical wear, but as far as things like CPUs, hard drives, motherboards, etc go, a link or a post of the product description should suffice.