I have for sale a LIKE NEW Subal housing for 5D MkII. This housing has been exhibited in a shop, and used only 2-3 times for tests in a pool. It really looks like NEVER USED!
Housing with type 4 bayonett, standard viewfinder and 2x Nikonos type strobe connections: 990 €
...or with GS magnified straight viewfinder 1390 €
For ports and other accessories please ask... maybe I can help you out with something used too