So I bought a spigen tough armor case for my iPhone 5 on eBay. Just got it today, it came wrapped inside a plastic. No original packaging material. It looks like a real spigen tough armor case, the build quality is pretty solid. I don't know if it's fake or real because I don't have the serial number. More than likely it's a knockoff, but man if it is, it's a really well made knockoff case. And I only got for 7$. I just wanted a good case that will protect my iPhone 5 which I bought in 2012 to last until late 2016. is it pretty normal for knockoff iPhone cases to be almost identical to the real ones with a build quality that's the same to boot?