We've heard that Artistry is a top 5 prestige brand, and also that Nutrilite is the #1 nutritional brand, but unfortunately the euromonitor reports cost a small fortune (or a diamond bonus :-) )

Just found something interesting though, a sample from Euromonitor's "Executive Summary of the Global Cosmetics & Toiletries Market"

Nothing global on Artistry, but it does report on Amway India and say Artistry was #9 in all cosmetics and toiletries in India in 2003 (not just prestige cosmetics) and it also says in the footnotes "Nutrilite is the world's largest dietary supplement brand"

So there we go, third party source.

If I can find more I'll blog it on Get the Facts - The Truth About Amway and Quixtar