A buddy of mine sent
this site to me. One of his coworkers ordered a Callaway driver and some Pro-V's. Apparently the Callaway looks and hits flawless, but he could tell that the Pro-V's were cheap knockoffs.
My buddy decided the risk was worth it and ordered a full set of Nike's (1,3,5W 3-9I, SW, PW, P & bag) for like $270. They haven't come in yet.
I'm not sure if I'd take the chance or not. I have a pair of Tommy Armour 345's that I've been playing with for 10 years now, so I'm past due for a new set.