Counterfeit MacBook MagSafe Charger - how to identify?

Is there any way to tell if an Apple accessory is a counterfeit from the outside packaging?

I bought a magsafe charger for my MacBook Pro last year from a reputable Apple dealer. NOT the Apple Store because we don't have one here on Maui. I had no reason to believe it wasn't the real thing until 3 days ago when the adapter's connector to the MacBook power socket overheated. I was pulling the charger out of my Mac and received second degree burns on my thumb and forefinger. Big brands like Disney and handbag designers regularly inspect retailers for counterfeits, but it doesn't seem like Apple does this. It was a certified Apple retailer, so buyer beware! I ran the issue through Apple and they won't back it up because it's a counterfeit, so I'm screwed. I think the message Apple is sending is to only buy online or at an Apple Store, and they won't backup purchases at authorized retailers.