I just ordered one from Cantonmade (ebay) today (before I found this thread).
Yes.. there is always a non-insignificant chance of receiving a knock-off when you order from "certain places" if you don't know better. But, being in Canada, it can be difficult to find this type of tool for a decent price (no Fry's). Anyway, I figured it was worth the risk. Especially with the reasonable shipping. Heck, I'm just getting into electronics soldering and have not used this level of gear before, so I might not even realize if it's a half decent fake.
Plus, the 10 extra included tips are nice for someone who's starting out. Unless of course they are shoddy knock-offs as well. :P
For casual, novice hobbiests in this area, such as myself, it would not be the end of the world, as long as the thing turns out to be usable.
I also cheaped out on all my soldering supplies by purchasing from dealextreme. < $9 for 1/2 Ibs of 0.6mm, 2% flux solder.