Stuff like this confuses me. Why are those websites selling at lower prices than the *official* re-sellers?
Who is doing the bad to who?
This is normal in the commerce world! Many big resellers have cheaper prices that the manufacturer, they buy big quantities and get high discounts. Also, when a product is outdated or old-fashioned will be sold by the manufacturer for very low price! Just 2 reasons why the prices are lower... there are many others.