You can always find one or two negative opinions reagrdless of products, price range. I am surprised you don't already know this. Toyota is rated most reliable cars by Consumer report, but I have met a few people swearing their Toyota was a junk.

You may find this recent thread interesting..
http://www.bikeforums.net/showthread.php?t=86184

In the thread, everybody says it's a good wheel, except one, a dealer who sells many of them. Which one you trust, I don't know. It's not a particulary cheap wheels.

At the end, it comes down to the numbers, percentages. You can also find many positive opinions too.

Edit: Often stores stock up inventory for big sale such as Christmas sale. They plan on which products to carry and how much they should be priced, for most profit. If they see a certain procuct potential of big seller, they stock up more, often cheaper for even quicker movement. It's best to have inventory just more than selling out but often they end up with left over more than they expected. If that happens, store sells them at even lower price for inventory rotation. It happens all the time, and it's not because people didn't buy it because of low quality, but the store over stocked because they thought they could sell more.