I am selling an Ikelite Underwater Housing Housing Kit + Dome port + Canon 20d.
Price is noted below, and I would also consider trades...
Housing was used 2x by the previous owner in fresh water, and I used it for 20 minutes while snorkeling in Thailand (bad weather prevented us from snorkeling more ).
The kit includes a dome port which fits a bunch of great lenses (most of my primes fit fine), along with two zoom rings.(model 5503.50)
Also included is a 20d + 1 battery + charger. The camera has no box and is an ebay camera, so its history is unknown, but it has worked well for me in its backup duties for me and is in fairly good cosmetic shape.
Here is a picture that I took with the kit + a 11-16 f2.8 tokina. This was my first time trying underwater stuff, so I was a bit hopeless... anyone who picks this up should be able to do far better with a bit of practice. It really has tons of potential.
It would "fit" other cameras of the same size / format, but the dials and buttons will be specific to each camera. So if you wanted to set up the camera, and Just use the shutter button, this might work on a 40D