i don’t know for sure, but the product being sold by some merchants described in some of the posts in this thread sound like so-called “grey”-market products.
“grey”-market is typically defined, if i am not mistaken, as products actually manufactured by the real manufacturer, but manufactured for another market – e.g., the far east for instance. that is, these “units” were mfr’d for sale in China, for example.
[NOTE: “grey”-market is therefore different from so-called “knock-offs”. “knock-offs” appear to be the actual product, but are NOT mfr’d by the actual Brand-Name Mfr., but rather by someone else using cheaper mat’ls & constuction (e.g. gold paint instead of gold plating and non-diamond jewel movements in “knock-offs” of some expensive watches, e.g. “knock-off” Rolex watches).]
they (i.e., “grey”-market) are purchased very cheaply there (e.g, China, etc) and then sold in another market, i.e. a higher priced market – like the good ‘ole USofA.
that’s why they don’t come with a mrf’s warranty. also, those who participate in “grey”-market sales are NOT authorized dealers of those products – hence they cannot offer a mfr’s warranty.
it’s a good deal if you never need warranty service, but if you do, you’re probably out of luck.
bottom-line: buyer beware.