I'm assuming that: 1. There's some non-thorough verification of the items rather than completely trusting the merchants. 2. Merchants could sanctioned if caug

I'm assuming that: 1. There's some non-thorough verification of the items rather than completely trusting the merchants. 2. Merchants could sanctioned if caught sending counterfeit items. 3. You don't get to choose how Amazon stocks its fulfillment centers. 4. Assuming that part of the suggested con is to set the counterfeit items price to a fraction of the Sold by Amazon, I'd guess that Amazon would probably be more careful with grouping vastly differently priced items together regarding of their ID. Again, these are all just assumptions but with that in mind, I would guess it won't be an easy thing to pull off.