Run your finger across the logo. If it's indented, it's real. Otherwise, probably not. Also, the carabiner is heavy duty steel, not a cheap aluminum flimsy material.
Not sure why you would even bother with ebay if you are in US. Miccastore has it in blue and red for $9.99: http://www.miccastore.com/fiio-hs7-hard-carrying-case-p-121.html