There's an independent site
www.consumerlabs.com that rates vitamins based on the following:
1.) Do they contain what they claim on their labels
2.) How quickly do they dissolve and go to work in the body.
Nutrilite always meets these standards.
As for overpriced, some of their supps, like the Daily multi-vitamin product is very inexpensive. You can get 90 tabs for about 11.00. Their Double X product is no doubt pricier, but then again, it has things that other supps don't. A starbucks coffee everyday is expensive too, so it depends on what you want.