You can find the Black one for 250€:
http://www.saturn.de/mcs/product/NINTENDO-Nintendo-Wii-U---Premium-Pack--32-GB--schwarz-inkl.-Nintendo-Land,48352,419220,474711.html?langId=-3&et_lid=21&etcc_par=Price+Search+Engine&etcc_med=Price+Search+Engine&etcc_cmp=Productlisting&et_cid=16&etcc_ori=Geizhals
I think that's the better deal. The Black one comes with more HDD space, NintendoLand, sensor bar and more:
http://www.netzwelt.de/news/94470_2-wii-u-kaufberatung-unterschiede-zwischen-schwarzer-weiss-konsole.html