Most or all on Amazon are fakes pretending to look like the real thing. Your best bet would be to just get one from Ebay, from a highly trusted seller, or just to blow out the full price at the Apple store.
Hit up CL I always see folks selling them on there, especially if you like Pink and Red... Hit up your friends, most have multiple cases and would probably sell you their old smart cover in a hot sec.
Best Buy Target JR Music Small Dog Micro Center or any Apple Authorized reseller Check there and you can look for a previous version which will fit.
I bougHt a knockoff from amazon for 4$ shipped i think. Works just as good as the oem one with working magnet. I would have bought one from apple but I wanted a red one and I wasn't going to pay 70$ for the leather one. My only complaint is that it left scratches on my screen protector. Not sure how it would affect the glass if it all.
I'd hardly call a tiny nick "destruction." And I'm pretty sure its easier to scratch a plastic screen protector and glass as I stated earlier.