Steelbook never been my cup of tea.
If it come as a part of collection, I'll have it
If it just bare-bone steel book I'll just wait for the lower price.
Also
http://steelbook.com/sw/frontend/sho...96959&layout=0
It have a great deal of catalog of steelbook release on both game and Movie produce by this company (Glud & Marstrand A/S) still missing a lot of content but good place to start your check list