Be real careful about warranty issues. If you're buying used components, then you are pretty much on your own but you probably get a great price. As for new stuff, it may be "gray market", where somebody buys a truckload from the factory, outside the normal distributors who support warranties. I have known a couple people who were assured by "Crazy Joe's Cheap Stereos" (made up name) that they had full warranties, only to find out that it was only good if they delivered the unit personally to the factory in Japan.