Hate to be a bummer but there have been a few threads about these types of sellers on some corsetry communities I follow. Basically, as you have guessed and others have said, you will not be getting what's in the picture, but a cheap copy of it.
For that price, it's probably still not a rip off from your perspective, but it is pretty crappy for those people who actually made the corsets in the pictures and are having their images stolen and their designs copied.
Still, it'll be something pretty for you to wear and a lot cheaper than buying one of the same quality from a lingerie store or sex shop.