In case if any of you planned to purchase this new "limited edition" set containing all of the released movies (Iron Man/Hulk/Captain America/Avengers):
http://www.amazon.com/gp/product/B0083SBMGW/
Don't do it! I'm already returning mine. The set is made up with an extremely flimsy, tiny (the carrying handle on it is made for toddler's hands) briefcase made out of cheap painted plastic, with a cheap plastic Tesseract "cube" with inexpensive blinking LED, few "case files" (which were actually pretty decent) and movies themselves, each packaged in a cheap cardboard sleeve (which can't even hold the disk securely) and with very lame single "bonus content" on separate disk... Pretty disappointing for a supposedly "limited edition" set. Of course, I didn't really expect an exact copy of movie's briefcase made out of real aluminum for such price, but they could've done better with it or raised the price for better quality hardware...
Soo... Yea, TLDR version: if you like those Marvel movies and you like collecting "limited editions" of movies - don't waste your $$$ on this junk, but them separately or wait for better release.