In USA, they are one of the known companies,currently operates
in the U.S., Canada, the United Kingdom, the Netherlands,
Australia, New Zealand, Hong Kong, Japan, Taiwan and the Caribbean
Islands. I think it has been around for 15 years.
In S'pore, they have been here less than a year, situated in
Takashimaya Shopping Centre.
Products is on healthcare, cosmetic and skincare.
As for the plan, in simple is on binary plan. I guess you know what
I mean. 
The below is stated in the website.
"USANA's Business Plan is designed to pay you commissions on sales
volume, with no limit to the number of levels from which you can
earn weekly commissions. Two other powerful advantages to USANA's
program is that there are no monthly group volume requirements and
no breakaways.
The income you receive from USANA will be in direct proportion to
your ability to introduce the USANA products to your customers, and
your ability to build an organization of Associates who, like you,
build a customer base along with an organization of
Associates.
USANA's Business Plan is revolutionizing the entrepreneurial
landscape today, and it is changing how people create perpetual,
long-term wealth. "
