I don't live in Spain myself and have never ordered anything from their website, but a quick search taught me that
http://www.game.es/ sells both the regular and the collector's edition of King's Bounty and has both in stock, so I'd try that one.
If the pictures on their site is accurate this is the EU version (notice the Nobilis logo on the bottom-right corner of the box). It also mentions that the manual is in 'Español', so the game is too probably.
P.S. The games are listed as "Kings Bounty - The Legends", so search for that (or just "Bounty"), or you will not find the games on this site.