Originally Posted by Dave2512
I don't think it's as common as they want us to believe.
I agree with that. I also think that, if a counterfeit is so good that the item's performance is indistinguishable from the genuine object and the item has to be dismembered to determine whether it is genuine, the onus for policing the problem lies on the owner of the Intellectual Property, not the lay consumer.
More generally, I despise fear mongering as a sales technique. I think operations like Calloway pre-owned, the two sources you mentioned, golfoverstock, tgw, etc. are pretty well established at this point and I wouldn't be any more worried about buying from them than from a Nike or Golfsmith store. That's not to say that there aren't some shady operators out there, but it's not hard to avoid getting burned (said as one who's been burned--on clothing, not golf gear--before)