Zurück in die Zukunft is available as a 3 DVD region 2 boxed set for EUR 44,99! (Thanks Dan.)
We impatient region 1-ers will have to wait until December 17, 2002 for a Back to the Future DVD release. DVDFile reports that extra features are still being produced for the region 1 discs, so you may want to hold off on ordering the German version just yet (unless you're into that kind of thing).
You'll notice that this DVD's Erscheinungstermin isn't until 26. September 2002. So it's not that much of a time advantage. :)