The Galaxy Nexus (which I love) costs 328€ now in Germany. The iPhone 5 will set you back at least 679€, and it has a much smaller screen. It just doesn't make sense to me, unless you want an expensive status symbol.
Also online: http://www.cyberport.de/smartphone-und-foto/smartphones/A409...
They also have the white version.
I think you can check online if the phone is available in a specific store at a given time.
Edit: Amazon.de has one for 319€ at the moment: http://amzn.to/S4rtbZ