Just stumbled upon this dare I say shocking research.

Analysis Of IRS Statistics Suggests A 98.94% Financial Failure Rate For Herbalife Sales Leaders

Their analysis suggested that the combination of Herbalife, NuSkin, and Amway participants who netted less than a living income in 2012 was 99.6% of all participants. While MLM proponents have been quick to criticize Messrs. Taylor, FitzPatrick, Brooks and Craig's work, none have published any research that refutes their findings.


Summary

While Herbalife does not disclose the business expenses incurred by its distributors, IRS statistics provide a reasonable basis for estimating these expenses.
Analysis of the IRS statistics and Herbalife’s “Statement of Average Gross Compensation” suggests a financial failure rate of 98.94% for distributors Herbalife categorizes as “Leaders”.
This finding is consistent with other estimates of financial failure rates among Herbalife distributors using different methodologies.
The pending FTC and other governmental investigations of Herbalife should not be limited to whether Herbalife constitutes a pyramid scheme, but also whether Herbalife is deceptively representing its business opportunity.



Analysis Of IRS Statistics Suggests A 98.94% Financial Failure Rate For Herbalife Sales Leaders - Herbalife Ltd. (NYSE:HLF) | Seeking Alpha