I believe the MLM business model is gaining traction as it doesn't involve rental of properties. Major retailers are suffering due to high rental costs. Good examples in Hong Kong are Sasa, Bossini and Giordano (share prices have retraced sharply over past 2 years).
Best World needs to stay focus and stay to its knitting - delivering quality personal healthcare products.
Price is in solid up trend and I think it is early phase yet.
The super strong run-up in the share price makes me wonder who the buyers are. They cannot be the 'regular' investors who look at small caps. One guess is that some of them could be the rich distributors of Best World in markets such as Taiwan. These people know how sales are doing there and if Taiwan is really getting hot, those distributors would surely be motivated to buy Best World shares.
Another group of investors could be fund managers in China where PEs of 20-40X are so common. To them, Best World is going to enjoy a boom when it gets a direct selling licence in China, so they can see more clearly (than others) how big a market it's going to be.