On a few sites around the 'net you'll find "price comparisons" that pretend to show that Amway products are over-priced. Are they? If price is all you are interested in, then a price comparison may indeed show Amway products as being more expensive than some competitor products. But price and value are not the same thing.
Critics of network marketing, and Amway and Quixtar in particular, often make the claim that while some people may make money in networking, it's at the expense of the majority who lose money. Now, assuming you are not talking about an illegal pyramid scheme, where you actually make money by recruiting people rather than product sales, how can you lose money? The only way is if your business expenses are greater than your business income.