honestly, no.
I bought one with the intention of using it alongside my kit lens for some fisheye fun but it's not that good.
It's not a lens by the way, it's a screw on adapter for a lens. Judging by the one you're looking at, it'll fit one with a 52mm front thread.
It doesn't produce anything that can even be considered wide, even at 18mm. It does come with a funky little macro adapter though, but thats not the reason you're buying it.
I'd say avoid it and go for the fisheye adapter. The one that produces actual round photographs.