At this point the biggest clue is that it is not sold by a well known Apple authorized reseller at the MSRP.
These counterfeit chargers look nearly identical to the originals, including all of Apple's branding. It is absolutely false advertising, infringement on Apple's trademarks, dangerous (these things cause fires), and a scam.
As much as I hate paying full price for these chargers, I would never buy one from anywhere other than an Apple store these days.
Edit: I really hope the MacBook going USB-C charging is a sign of a coming era of non-proprietary charging for Apple laptops. That said, there are obviously counterfeit issues with USB chargers as well, but there is at least more than one legitimate vendor to help with competition a bit.
These counterfeit chargers look nearly identical to the originals, including all of Apple's branding. It is absolutely false advertising, infringement on Apple's trademarks, dangerous (these things cause fires), and a scam.
As much as I hate paying full price for these chargers, I would never buy one from anywhere other than an Apple store these days.
Edit: I really hope the MacBook going USB-C charging is a sign of a coming era of non-proprietary charging for Apple laptops. That said, there are obviously counterfeit issues with USB chargers as well, but there is at least more than one legitimate vendor to help with competition a bit.