I recently discovered that GameStop.es (Spain) is offering a SteelBook for Dead Island when you buy either the Standard Edition or the Special Edition:
PS3 (Standard Edition) -
http://www.gamestop.es/40412_PlaySta...ad_Island.aspx
X360 (Standard Edition) -
http://www.gamestop.es/40413_XBOX_360_Dead_Island.aspx
PS3 (Limited Edition) -
http://www.gamestop.es/40515_PlaySta..._Limitada.aspx
X360 (Limited Edition) -
http://www.gamestop.es/40516_XBOX_36..._Limitada.aspx
All versions are retailing at €52.99, although I believe the PS3 Limited Edition has sold out
EDIT: I also believe that these may be limited to only 500 copies, as per the text at the bottom of each picture