Not that companies should supply sub standard goods, but everyone expects to take advantage of distance selling, and increased rights to return etc - this is fair enough but all these returned goods have to be sold again often with damaged packaging, maybe scuffs etc, which the retailer can't do anything about.
People on here happy returning things for all kinds of reasons, there was a guy I saw the other day who had ordered a set of forks, then ordered another set the same cos the price was lower a couple of days later and returned the originals. Technically - you can buy bike parts boxed retail online, fit them, scratch them a bit finding they don't fit, then return them without the original box and packaging and get a full refund, then what does the retailer do with what's left?
So maybe an occasional item with a bit of a minor flaw or missing its box is the price to pay for the ability to buy a couple of bits and return whatever doesn't fit/look good etc - swings and roundabouts and all that? If I bought bike parts online that were only cosmetically flawed (within reason) it wouldn't bother me, they're just going to get bashed up anyway.