Personally, I try to take anything sold outside the US with a grain of salt.
The fact that there are some clones out there that are so close in appearance to the real thing makes me even more suspicious.
For the most part, I try to restrict all my purchases from US sellers only. Not only do I get the things I ordered 2-3 weeks faster, I don't have to put up with any "Made in China" crap.
If however the product in question is already Made in China, I see no harm in getting it directly from the source.
If however we're talking about US made products like Surefire or Malkoff from a source in China or Hong Kong, there's going to be enough salt to shrivel up all the slugs in the world.