https://www.amazon.com/Apple-A1385-Adapter-Charger-iPhone/dp...
I see two sellers offering an iPhone charger, ostensibly genuine and new, as low as USD 3.19.
Compare with the Apple listing for the same item for USD 19: http://www.apple.com/shop/product/MD810LL/A/apple-5w-usb-pow...
There is no way you can be selling the genuine product at that price and be making a profit. I don't know what Apple's wholesale price for chargers is, but it is presumably more than USD 3.19.
Amazon has lost at least two orders from me recently because I had no confidence that I would receive a genuine product.