They are SO easy to get though! I order all of my Steelbooks on Amazon's UK site, and many times they are cheaper than what they would be here in the US. You should look on there sometime. They have all kinds of Steelbooks! The only downfall (if you want to call it that) is that the alternate title will be on the cover. For example, The Avengers will have Avengers Assemble on the cover. Other than that, it's freaking awesome!
In fact you go to the website and just simply search for "steelbook blu ray" and you get all this......
http://www.amazon.co.uk/s/ref=nb_sb_noss_1/278-8355283-8599334?url=search-alias%3Daps&field-keywords=steelbook+blu+ray&x=0&y=0
Edit: One other thing. The Blu Rays will actually be Region Free, while the DVD (if one is included) will not be. So you won't be able to use the DVD, unless you have a Region Free DVD player.