This is common knowledge. Company contracts a factory for a certain number of units. Factory makes extra to account for any that come out with cosmetic defects, etc. I'm not going to swear to you that anything generic on ebay is top quality, I'm just simply saying that there is a high probability that they are. Think about. You guys want to see carbon product from reputable companies. Well to be considered a reputable company, they need to ahve a presence in cycling magazines, cycling forums, television, at bike shops, etc. All those things cost money and drive up the prices. The ebay guy can charge 1/3 of the big name company because they have next to no costs. the same thing happens in golf. I'll gladly take my no name chinese made muscleback irons up against anybody any time. I get the same arguments on golf forums "ohhh those knockoffs are probalby using zinc instead of 1020 steel, blah blah blah"