This story is eye opening. Be VERY careful when ordering products through Amazon. Even products sold by Amazon (not just fulfilled by Amazon) have been dangerous counterfeit products (like chargers looking like Apples own, and wearing their markings).

Apple sues Mobile Star for selling counterfeit power adaptors and charging cables through Amazon

More about the problem of counterfeit products in Amazon

Really got to stay vigilant if you want to avoid ending up with counterfeit products these days.