Don't know how obvious a knockoff would be, but that's why you only bid on items from sellers with high positive reviews for high tag items.
Since my lag skills aren't very good, I'm totally a "every putt is straight if you hit it hard enough" kind of putter. It works fairly well. At some point, I'll need to further develop distance control.
Picked up a set of 2012 Cobra Amp irons/hybrids on ebay for $421
it's the 3h, 4h, 5-PW set. $700 on sale everywhere else, and they're not knockoffs like half the mizunos and pings are on Ebay.
Freakin sweet clubs.