I'm not sure how many of you know about this but both MK movies have been on steelbook for quite some time. Steelbook versions of films are gradually becoming popular in the U.S., both for their attractive style and minimalist size that allows even more movies to be fit within a storage space.

They are both outside of the United States and can be bought through E-bay by search.

Alternatively you can view cases in this unboxing video