It's a nice little package. Not only do you get the lens, you get a viewfinder (the black gadget you see fixed to the top of the camera) and a bag to keep it all in. The viewfinder is very handy because, as well as still allowing you to compose via the usual viewfinder, the super-wide one has brightlines for the "standard" lens too. This means that you can swap lenses without needing to pop the viewfinder on and off. I think that's a rather nice touch.
The other thing I purchased, more on a whim than with an actual need, was the Canon EOS Diana+ lens adaptor. Now I can use either of the Diana+ lenses I've got on my Canon EOS 400D.
I had hoped to test both toys today but the weather was pretty foul and the light was no good for a bit of messing about. Hopefully I'll get to try them some time soon. Obviously I'll blog about the results when I do.