While "fulfilled by Amazon" can no longer guarantee something isn't counterfeit, they still do and process the return and will get you your money back at least (and the issue/loss will absolutely land in the sellers lap). At least they are still providing that safety net at the moment. But once they start pushing back on Prime members and this process things will nose dive at Amazon. I'm certain their are people scamming Amazon and seller's abusing that process too. It's only a matter of time until something changes...