First of all - what do you plan to use it for?
A friend of mine ordered one two years ago. The long and the short of it was the guy never made good and charged his card. He had to file a fraud complaint with his CC company and it was over a year before he got his money back. There were lots of "oh it's going out next week" and "I just shipped it..." stories and ultimately it wasn't a good experience.
While some folks may disagree with negative reviews, I think they're the most important. The machine itself may be handy with scrollsawers and fretwork. It's really not terribly useful in most furniture operations, that I've found. You need to be very steady with your feed pressure and rate or you will get little bumps or scallops where you pause.
If you're a DIY kinda guy, take a look at Stockroom Supply. They sell kits for building your own version of the same kind of tool. Never dealt with 'em, but I've only heard good things from those who have.