Ah ok, a couple of the guys at microcenter said they heard the Costa Rica chips theoretically were better for overclocking, but perhaps they just wanted to move the older chips
I can't really seem to find any information either way, just curious if there was any merit to their claims
This seems like a scam. The pricing that would be required to turn a profit on self-binning chips would be way beyond what most people would pay. You would have to go through probably 10 5960x's to find one that can do 4.7ghz, and reselling 9 of them you're taking a $200 loss. So $2800 would be the fair price to break even, but they're only asking $1200?
Before accusing anybody of scamming, I would suggest to perform some research fist and provide evidence.
Anyway, these guys are legit according to Guru3D.com .